Engineer Engineering

Sub. Faculty Recruitment for Ethiopian Govt Universities job.

Dear Sir,

Enclosed is my CV for consideration. My experience so far:

** ***** ** ********* ************* to Reservoir Studies, Engineering, Simulation, Management.

32 years of total service with E&P Companies since 1984.

International E&P Experience (2005-‘13):

Recent Oct 2011 – Mar 2013

Sonangol P&P, Luanda. Revitalization of Total Co., operated eight Offshore Mature Oilfields. Field Evaluation, Reservoir Studies, Shutin well revitalization, Reservoir Modeling, HU & HM, Simulation, FPP. Identification of New and additional opportunities at wells, feasibility studies of new technologies, Assisted HM-Enable, Identifying vuggy or high porosity zones, etc.

A Senior Reservoir Engineer on staff role or a consultant:

AGOCO/ Schlumberger, Benghazi, Libya.

Knowledge Reservoir, Staines/ Chertsey, Greater London.

OPC, Charlton Kings Rd, London.

National E&P Experience (1984-‘05):

Tata-Petrodyne Ltd., Consultant Reservoir Engineer/ E&P Software Engineer.

ONGC, Chief Manager (Reservoir)/ Chief Mathematician.

Teaching/ R&D/Trainings/ Workshops (1979-Present)

2013- Present:

Review of several International Conference Papers-Since 2015.

Invited Talk: Encounter with Data Resolutions in Oil & Gas Industry, 31 January 2014, Mewbourne School of Petroleum & Geological Engineering, University of Oklahoma Norman, Oklahoma.

Explore work on Graph Labeling. (Under Submission):

oEuler’s Graph World- More Conjectures on Gracefulness Boundaries-Part-I, II & III.

oEuler Graphs: Purity, Regularity and Evenness-Law of Nature?

(Regularity occurs at naive levels with Purity and Dominating Evenness).

2008-‘09: Senior Faculty, CES, DDun.

Senior Faculty, Graph Theory, CRRaoAIMSCS, UoH, Hyderabad.

1984-’04: Inhouse Trainings/ Workshops with ONGC:

1979-‘84: Faculty, Colleges in Greater Mumbai.

Regards

Dr Suryaprakash Rao,

Reservoir Engineer Consultant

Powai, Mumbai-400076, MA, India

Name : Dr. Suryaprakash Rao, MSc, PhD

Title : Reservoir Engineer Consultant

Educational : PhD in Experimental Designs/ Combinatorics, May 1975

Masters in Mathematics/Statistics, May 1971

Bachelors in Mathematics /Physics/ Statistics, May 1969

Nationality : Indian

INDUSTRY CAREER SUMMARY. An E&P professional with a total of 25 years of diversified experience since 1984 in the wide spectrum of upstream petroleum industry with exposure to complex carbonate and clastic reservoirs onshore/offshore and heavy emphasis in reservoir engineering, integrated field studies and simulation. Much of my technical career has been spent in resource/ reserve estimation/ appraisal to assessment, reservoir characterization, reservoir modeling, History Matching and reservoir simulation, data management. A project co-coordinator with a track record in field development/ optimisation/ management with skill set in exploration & production with focus on uncertainty identification and analysis. I have been involved in worldwide and domestic reservoir development and exploitation projects working with or leading multi-discipline reservoir teams on integrated development studies, full field reviews and exploration activities. I have a proven track record as a committed team player who provides mentoring in training and technology transfer. Areas of expertise range from field development, and management of mature/ marginal fields to sub-surface consulting. Most recent experience focused on geo-modeling and reservoir modeling, HM and simulation including the evaluation, development and revitalization of international fields. I am a confident team player, dedicated, result oriented, tenacious and versatile.

Career History

2011-Recent, SonangolPP, Luanda, Angola

Reservoir Engineer Consultant.

Responsibility: Revitalisation of Shutin Wells of Total Operated eight Block-03 Offshore Mature Oilfields. Full Field Reviews of eight oilfields. Intial Reservoir Studies were conducted using DCA, WOR, w/c, Chan Plots, Contour and Grid plots including MBAL, Prosper studies.

Mature FDP for two near or billion barrel oilfields which are highly vuggular and fractured. GM, DM, Upscaling, RM, HM, RS, PP using PetrelRE, Eclipse, OFM, MBAL, Prosper. New and additional opportunities were identified at shutin/ poor producers or injectors in the oilfields thus optimising produced fluids. Maximised oil production recommending shutting of high w/c and high gas producing intervals as part of revitalisation process. Recommended new technologies (Polymer, DOWS) in dealing with the high w/c.

Uncertainty studies were conducted and reported in drilling an Asset proposed infill well. Revival plans of a shut down platform due to damage were recommended after FFR. Optimised plans by identifying intervals high w/c and gas rates for squeeze.

2010–2011 Independent Reservoir Engineer Consultant

Evaluation of an oilfield FDP with simulation runs for sensitivity.

International Block/ Field evaluation.

EOR Web surveys on Waterflood Monitoring & Performance world over.

Studies on Ensemble Kalman Filter in Automatic History Matching with a comprehensive literature survey.

Prime Labelling and Prime Graphs, Presented at the ACGT Conference-KUD, VTUB, 20-23 April 2011, Belgum.

Resource Person, Invited Talk, Workshop on Graph Theory and applications, CSD, BHU, Varanasi, May 2011.

Courses taught to BTech Students of Applied Petroleum Engineering & Gas Engineering: Reservoir Engineering and Reservoir Modelling & Simulation with course material. Research guidance to a DRF was given in Automatic History Matching based on Karhunen Loeve-Transform, Ensemble and other Kalman Filter types with a comprehensive literature survey from books, web, theses, SPE papers and proceedings. Guided students on Oil & Gas Industry minor & major projects and evaluated presentations. Introductory training on Eclipse, Petrel and IMEX with demos were given. Mock interviews were conducted for final year BTech students for Placements. Professor, HoD, CoE, UPES, Dehradun.

R&D in Combinatorics with work on Prime Labellings and Prime Graphs- Constructions, Embeddings and NP-Completeness with possible applications in Cryptography with a proposal to write a research monograph on Graphs and Complements. Interesting results were proved and the paper Prime Labellings and Prime Graphs- Constructions, Embeddings and NP-Completeness is under preparation. Visiting Professor, CRRaoAIMSCS, UoH, Hyderabad.

Initial designing and scheduling Training Course preparation on up/down-stream Oil Industry. Prepared course material for Module-1 introductory lectures. Web surveys on Waterflood performance monitoring, surveillance, EOR. Alternate Energy reviews- Up-Down Stream Training Institute, Mumbai.

Web surveys on EOR with special attention to Waterflood Monitoring & Performance world over. Gradient and EnsKF in the Automated HM.

2008-‘09 AGOCO, Libya (Schlumberger) Senior Reservoir Engineer

Production Optimisation of a shallow Hamada oilfield under AL and FDP of clastic oil pools. Reviewed, revised reports including DST, Well tests, Field trips, etc. Identified opportunities for increasing reserves and production. Mentoring client nominees.

2007-‘08 Knowledge Reservoir, Staines; Chertsey Senior Reservoir Engineer/ GeoModeller

GeoModel building for Ralah and Mala oilfields. Upscaling and uploading the models for Eclipse reservoir simulation including Data Validation, Data Management, Image processing.

Data Room Evaluation of Devon producing assets in Western Desert & Gulf of Suez.

2005-’06 Oilfield Production Consultants Ltd, London UK Senior Reservoir Engineer

As part of Projects & Reservoir Studies Group, accomplished 14 oil/ gas projects from 8 Clients for History Matching & Simulation, Field Evaluation/Development/ Management.

Oil Fields. Water breakthrough issues, 5- and 9-spot pattern flood simulations for production performance and water breakthrough times. Decline curve analysis, PVT data analysis and modeling using PVTi to generate PVO files for simulation. HM and forecast simulations. Converted Eclipse2002A model to Eclipse2005A for production update, HM and forecast. Dual porosity, dual permeability model retrieval and testing.

Gas Fields. Evaluated: With oil rim using probabilistic models, Reserve review and performance forecast. Generated gas production profiles.

Petrel for: Hybrid property facies models created in Petrel to export grid and properties for initialization. Static modeling. LGR implementation at 3 deviated wells to study LGR effects on oil/ water production. Upscaling zones using Petrel to export the required grid data for initializations, HM and simulation.

MBAL for pressure and material balance studies

2004-2005 Tata-Petrodyne Limited Reservoir Engineer & E&P Software Engineer

Tata Petrodyne is a part of Tata Power, Tata Sons of Tata Group.

A consultant for offshore Marginal fields’ evaluation. Carried out offshore marginal field evaluation. Material balance and reservoir simulation for field performance analysis and prediction leading to competitive bids. Monte-Carlo simulation techniques to quantify uncertainty using industry standard tools like Crystal Ball; EXODUS- reservoir simulation; Windig- digitizing bitmaps; Prosper- lift curves; MBAL-material balance studies and QUESTOR- surface facility planning.

1984 – 2004 ONGC, India Chief Mathematician & Reservoir Engineer

Basins worked on - Western Offshore Basin, Cambay Basin, Assam-Arakan Basin.

Offshore Fields - Bombay High, Heera (Main, South), D-1, B-173A.

Onshore Fields - Geleki, Khoraghat and Sonari-Safrai fields, Assam.

Responsibilities included:

Regional Data Analysis of DCS area, Resources Appraisal/ Assessment of Western Offshore & Cambay Basins, Reserve Estimates, YTF Potential,

Reservoir Modeling/ Characterization/ Management, Waterflood, Field Evaluation/ Field Development Planning/ Economics, Geostatistical, Fractal, Probabilistic, Stochastic Studies of the oilfields.

Offshore: Bombay High, Heera, B-173A, D-1; Onshore: Geleki, Khoraghat, Sonari-Safrai.

Member of FDPs for Bombay High & Heera fields.

Inhouse trainings, industry publications/ presentations at conferences/ seminars/ workshops.

Head COIN-Energy Group, IRS, Ahmedabad

Under Industry-Academia Collaboration a Status Report on 5 projects was prepared and presented to the Virtual Corporate Board viz.,

Improved Oil Recovery:

Microbial EOR

Natural Petroleum Sulphonates;

Physical Modeling & Numerical Simulation of 3-D Flood Patterns;

Identification of Flow Units-AI/ Expert System;

Underground Coal Gasification.

A general presentation was also made to IRS geoscientists with a comprehensive survey from web pages updating the progress in these technologies. As part of Industry –Academia collaboration, a 1-day Seminar was arranged at IIT, Mumbai on behalf of ONGC, which included 5 problems of interest including UCG and MEOR. The seminar was organised to draw the attention of academicians to oil & gas industry problems.

Major projects handled included:

Field Development; In-charge of task force, consisting of Basin (G&G) Studies, IRS (simulation & production profiles), IOGPT, Engineering & Construction (development plans with surface facilities and vetting), on initial development schemes for G-1 & GS-15 (Eastern offshore), Vasai East (Western offshore).

Outsourcing Marginal Fields (MF):

96 MFs with estimated potential of 204 MMT oil and 121 BCM gas.

Procedures for outsourcing Production Management of onshore MFs, Organised pre-bid conferences, prepared: bid document, bid evaluation criteria, tender document, etc.

Data-Room creation for the 1st round of 19 onshore MFs with evaluation and the 2nd round of 19 offshore MFs. Data package with 1000 scanned reports/ logs/ seismic sections (total size: 20 GB).

In 2004, Eight Onshore MFs were awarded for development through service contract.

Reservoir Engineering:

k-transforms with k-maps for FDP L-III, Bombay High (BH) first time using stepwise/ multiple regression.

FDP Heera: Well-wise Coates-Dumenoir k with composite log, PLT & Reservoir cross sections (RCS) based on Fractal-Geostatistics.

Fence Profiles for BH, Heera, B173-A, D-1 fields- depicting Petrophysical properties; Bubble Maps- oil, gas, water, w/c, GOR, … for infill well locations and reservoir management.

Seismic graben in North Heera was shown prospective from Fractal sections. Reservoir profiles showed local highs leading to accretion of additional oil reserve and horizontal wells proposed turned out prolific producers.

Use of multi-attribute analysis based on Reservoir/ Production data to optimise infill well locations in L-III. Recoverable reserve and platform location proposals with economics prepared and reported. Past performance vouches for the quality and reliability on predictions and inferences. Results won Best Paper Director’s Award.

B-173A-3 poor facies in comparison to other wells in B-173A. RCS to neighbouring wells evinced payzone anomalies as localised phenomenon. 3-D seismic mapping lacked resolution. Subsequent drilling supported the inferences made.

RCS for BHNorth, Heera, D-1 oilfields depicting Phi, k, GR, …

Wave mode picking from Sonic Waveform data and k-estimation.

Log correlation map for D-1 multiple pay zones prepared and was basis for simulation and further development.

3 to 5- Well patterns, ERD Wells suiting inter-well spacing for L-III, BH redevelopment with IPEC SIMCO-simulation.

Fortran programs for RE calculations, FIP, RE/RF, Well deliverability, PI, Rock and Fluid properties, etc.

Status report presented on Industry-Academia Collaboration on Improved Recovery of Oil using MEOR, AI, etc.

Reservoir Characterisation/Description:

Micro-Facies classification and Electro-Facies identification from electrologs using multivariate statistics including Cluster, Principal Component, Factor and Discriminant Analyses.

Identification of hydrocarbon anomalies using correlation statistics on offshore Sniffer Data.

Resource Assessment:

Yet-to-find field-size Distributions: Implemented Pareto based USGS Resource Assessment procedures. Applied to Western Offshore Basin, BH-DCS/Tapti-Daman Blocks and Cambay Basin.

Application of USGS recommended Pareto analysis to estimate likely field size distributions in Cambay and Western offshore Basins. Discoveries of Lakshmi, Ambe, Gauri, Parvati and Bheema fields is a good support.

Quantification of uncertainty in exploration using fuzzy arithmetic as against the use of MC simulation.

Additional Oil:

Multi-attribute analysis considering Reservoir Parameters and Production Performance data wellwise to identify still potential areas for additional oil in L-III, BH. Platforms were proposed in the identified potential areas with viable/ supporting economics. The methodology is applicable to any field from first round of spanning wells complete with secondary recovery process with additional infill wells ongoing.

Award & Honor Industry Felicitation

2000 Best paper Director’s Award, ONGC, New Delhi 2000.

‘Identifying Still Potential Areas for Additional Oil – L-III, Bombay High’, New Delhi-2000. Multi-attribute analysis based on well performance data and reservoir parameters to identify still potential areas, a significant ingredient for L-III redevelopment scheme for additional oil. Recoverable reserve and platform location proposals with economics submitted. Last 6 year performance supports and vouches for the inferences and predictions made.

1995 Mathematician of the year, Chairman and Managing Director’s Award, ONGC, 1995.

In recognition of the outstanding work on reservoir cross sections, log correlations, payzone permeability maps, bubble diagrams, fence profiles depicting fractal sections leading to enhanced reservoir characterization/ understanding with additional reserve accretion won a prestigious chairman award ‘Best Mathematician of The Year-1994’.

1991-’99 Fractal and Geostatistics applications in synthetic reservoir cross-sections.

1993-’98 A member of FDP Teams:

Field Development Plan, Bombay High, First time permeability transforms & maps.

Comprehensive Development Plan, Main/ South Heera, k, composite logs, ...

Trainings - Given

Faculty member for training programs at ONGC Training Institutes:

Advances in Oil & Gas Field Development 1997, IMD, Dehradun.

Seminar on Fractals and Applications, 1994, RTI, Chennai.

Contouring Techniques and utility in Industry, RTI, Panvel.

ELXSI-6400, OMINI-16E Utilities & Usage: Inhouse. 87-90.

Image Analysis & Mathematical Morphology by Ch. Lantuijoul, CGMM Fontaineableau, France: Organized with Introductory lectures on Topology given by me. 1986.

PUBLICATIONS - Oil & Gas Industry

Year

Oil Industry Conferences

Title of paper /poster presentation

1995

Petrotech-95, NewDelhi

Synthetic Reservoir Cross-Sections Using Fractal-Gestatistics- Heera Case Study

Reservoir Characterization of Multilayer Heterogeneous Reservoir

TORCH: Hybrid Algorithm to Pick Wave Modes from Waveform Data

1997

Petrotech-97, NewDelhi

Fractals, Bubble Diagrams, Fractal Profiles- Enhanced LDDF

1998

SPE-98 New Delhi.

Vertical Resolution Enhancement of Seismic

1998

SPG-98, Chennai

Mathematical Morphological Operations Applied To Seismic Images

1999

Petrotech-99, NewDelhi

Improved Reservoir Characterization - A New Approach Using Fractal Geostatistics

Hydrocarbon Potential Of Cambay & Bombay Offshore Basins - USGS Procedure

2001

Petrotech-2001, NewDelhi

Enhanced Seismic Bandwidth For Thin Bed Delineation

Fractured Basement Reservoirs In Dhansiri Valley- Some New Aspects

Geomicrobial Data Analysis For HC Prospecting- Using Multivariate Statistics

2000

SPG-2000, Chennai

Strati-Structural And Thin Bed Features- A Challenge For Exploration, & Exploitation

2003

Petrotech-2003, NewDelhi

Strati-Structural And Thin Bed Features - A Challenge For Exploration

2003

DMPS, IPSHEM, Goa

Presented View From Space of Global Disasters- Man: A Strong Catalyst?

Participated in discussions and lead a safety drill successfully.

Peers/Co-Authors. Dr. S.K. Laskar, D.N. Basu, Dr. C.H. Mehta, A.L. Roy, T.K. Das, J.L. Narasimham, A.V. Raju, J.M. Joshi, R. Venkatarengan, D.R. Ghosh, M.R. Rao, P.S.N. Kutty, Dr. D.M. Kale; R. Naik, Gill, S. Banergee, K. Suryanarayana, T.V.S. Rao, P. Cherukupally, S.A. Azim, B.S. Jadaun, K. Ananthakrishna, G. Parida, P.B. Pati, M.M. Jain, D. Sar, V. Subbarao, D. Sareen, Naresh Kumar, P. K. Goswami,, P. K. Hazarika, S. K. Pegu, J. K. Bora, D. E.Nathaniel, D. C. Chaturvedi.

Certifications

Meritorious Performance in Exploration Business Group, ONGC, 1999.

IITB JAVA Workshop, 17th October 1998, IIT, Bombay.

SPE Member, April 1998.

Proficiency in Visual C++, A-Grade, 15th-31st Dec 1997, Concourse, Information Technology International Ltd., Mumbai, July 1998. With Dummy Project.

PERT/CPM, 7th-18th Dec 1987, NITIE, Mumbai.

Computer Systems Analysis & Design, 27th Aug-4th Sept, 1987, NITIE, Mumbai.

Merit in recognition of the Excellent services rendered during 1987, ONGC,.

Dipmeter Interpretation Seminar, Wireline Services, Gearhart Industries Inc., 8-12 December 1986, New Delhi.

‘Genetic Algorithms’, 2 weeks training, IIT, Kanpur.

Yogic Kriyas- Internal Cleansing, Sri. Ambika Yog Kutir, April 1997

Academic Summary (1971-1984). A meritorious Mathematics post-graduate from Shivaji University, Kolhapur 1971 with doctorate in Experimental Designs and Combinatorics- Mathematical Statistics, from Prestigious Indian Institute of Technology, Bombay1975; and Post-Doctoral work in Graph Theory, with the Internationally known Indian Statistical Institute, Calcutta, included in Golden Jubilee Proceedings 1981. Research initiated and carried out drawn attention of mathematicians’ world over. Theorems appeared in graph theory books, theses and found applications. I carry Paul Erdos’ number-2 (world renowned mathematician) in the chain of workers.

Research/Distinctions. New concepts introduced: Distance convexity in graphs/ Generalized self-complimentary graphs. Graceful/ Prime Graphs & Algorithms proposed and made several conjectures, some settled. Guided for research thesis. Published papers. Attended/ presented papers at conferences/ workshops/ Seminars. Theorems appeared in graph theory 9books e.g., 1. V.P. Soltan, Introduction to the Axiomatic Theory of Convexity (in Russian) (1984). 2. Buckley, F., and Harary, F. Distance in graphs. Addison Wesley Reading, 1990; Referenced in Many Theses and found applications in Optimization.

Courses Taught (B.Tech, B.Sc., B.Com., B.A.) Discrete Mathematics, Graph Theory, Abstract (Linear) Algebra, Topology, Calculus with Analytical Geometry, Information Theory, Coding Theory, Linear Programming, Operations Research, Numerical Methods, Statistics and Probability, Computer Science and Programming.

1978-’84 Degree College Faculty Member

Faculty Member Taught graduate level courses in Science, Commerce, Arts Colleges. Subjects taught include: Abstract Algebra, Discrete Mathematics, Information Theory, Linear Programming, Game theory, Business Mathematics/ Statistics. Computer Programming- FORTRAN-77, BASIC, COBOL, VisualC++. Well versed with PC Windows and MSOffice suite, Adobe Acrobat, CorelDraw.

Jun ‘83 to Mar’84, Lecturer in Mathematics/ Statistics, Head of Department. KPB Hinduja College of Commerce, Churni Road, Mumbai. Business Mathematics/ Business Statistics.

Aug ’83 to Mar ‘84. Part-time Lecturer in Mathematics, BES College of Commerce, Khetwadi. Business Statistics.

Apr’ 82 to May ’83, Lecturer in Mathematics. Vidya Vardhini College, Vasai. Operations Research- Information Theory, Linear Programming, Game theory, Queuing Theory, Inventory Control. Computer Programming- Introduction, FORTRAN, BASIC, COBOL. (First time the courses were taught in the college).

Feb ’ 81 to Mar ’82, Research Associate, Mehta Research Institute, Allahabad. Continued research on graceful labeling of graphs. Several conjectures were made. Studies on Prime labelings of graphs.

Aug ‘79 to Jan ‘80, Lecturer in Mathematics, CHM College, Ulhasnagar. Abstract Algebra; Introduction, FORTRAN, BASIC, COBOL. (First time the courses were taught in the college).

Nov ‘78 to Jul ‘79, Lecturer in Statistics, VPM Arts & Commerce College, Thane. Business Statistics.

Qualifications

1976-78 Post-Doctoral Fellow - Statistics & Mathematics Division

Indian Statistical Institute - ISI Calcutta, India

Continued contributions on Distance Convexity in Graphs, Graph Labeling and Generalized Self- Complementary Graphs (First time accreditation). Recorded in ISI Golden Jubilee Proceeding. Research visit to Universite de Montreal, McGill University, McMaster University, Concordia University during 1977-78.

1974-76 Department of Atomic Energy Fellowship Mumbai, India

1971-74 Doctor of Philosophy- PhD Mathematics - Combinatorics Research Fellow

Indian Institute of Technology – IIT Mumbai, India

Block Designs and Graph Theory, IIT, Mumbai & Department of Atomic Energy Fellowship. Thesis title: ‘Some Combinatorial Problems in Block Designs & Graphs-1975’. Chapters on: Constructions of BIBDs, Patially BIBDs and generalized Hadamard Matrices, g-Circulant Matrices; Distance Convex Sets in Graphs, Graceful numberings. Distance convexity in graphs- a new concept.

1969-71 Masters in Science - M.Sc. Pure Mathematics Kolhapur, India

Shivaji University, A meritorious Mathematics post-graduate.

1966-69 Graduation- B. Sc. Mathematics, Statistics & Physics Ongole, India

CSR Sarma College, Andhra University.

Personal Details

Date of birth : 01 July 1949 (Actual: 15 Nov 1951)

Status : Married. Two daughters, one son

Nationality : Indian

Visa : FLR Tier-1 (HSMP), UK.

Membership

Ramanujan Mathematical Society, Permanent Member 1982.

National Academy of Sciences, Allahabad, Permanent Member 1981.

IEEE Computers/Information Theory, Member 1988.

SPE Member 1998.

Research Guidance leading to PhD

Dr. T. Gangopadhyay, ISI, Calcutta. Joint work on the Graceful Labelings and on the new concept introduced by me Generalized Self-complementary Graphs published and included in his thesis.

Dr. T.N. Janakiraman, Ramanujan Institute, Madras. Joint work on Ideals in Graphs included in his thesis.

Academic– Graph Theory & Combinatorics

Peers/Co-Authors. (Dr. Prof.) G.A. Patwardhan, M.N. Vartak, A.R. Rao; B.D. Acharya, S.B. Rao, T. Gangopadhyay, Jean P. Laborde, T.N. Janakiraman, Devarajan, T. - Part work published in books. Some conjectures made are settled many still remain open.

1.Row and column Schur designs, 1975.

2.On Some Constructions of Modular Hadamard Matrices. J. Combinatorial Theory, 20 (1976) 258-263.

3.Partial Kronecker Product & Its Applications In Modular Hadamard Matrices, 1976.

4.Graceful cycles. Util. Math. 10, 307-317 (1976).

5.On Certain Non-graceful Graphs, Tech. Rep. No. Math12176 (1976), 1-12, I.S.I., Calcutta.

6.Bipartite Graceful Graphs-I, Utilitas Mathematica, 17 (1980), 271-275

7.Graceful Graphs- Algorithms & Conjectures, Graph Theory & Applications, (23-26 April '97).

8.Structural properties of r-partite complementing permutations, Tech. Report No. 19/77, ISI, Calcutta (1977).

9.r-partite self-complementary graphs, Tech. Report No. 15/77, ISI, Calcutta (1977).

10.Paths in r-partite self-complementary graphs, Discrete Math. 32 (1980) 229-244.

11.r-partite self-complementary graphs diameters, Discrete Math. 32 (1980) 245-255.

12.Multipartite self-complementary graphs, Ars Combin. 13 (1982) 87-114.

13.Characterization of Planar DCS* Graphs, Proc. Symp. Graph Theory, ISI, Calcutta (1976), 138-150

14.A Class of DCS Graphs, Ars Comb. 7 (1979) 19-26.

15.Another Characterization of HyperCubes, Disc. Math., 39(1982), 161-166

16.Distance Convex Sets in Graphs, Symp. Optimization in Honour of Prof. M.N. Vartak, Design of Experiments & Graph Theory (1986), Ed. M.N. Gopalan, IIT, Bombay, 335- 341.

17.Another Characterization & Some Properties of Planar DCS Graphs, Above Proc, 346-352, (1986).

18.Two Decades Survey of Geodesic Convexity in Graphs, Mathai, A. M. (ed.), Proc. Symp. On Graph Theory & Combinatorics, Kochi, Kerala, (1991), Eds. T. Trivikraman & A. Vijayakumar, pp.119-153.

19.Uniconvex Graphs, Proc. Bose Memorial Conf, ISI, Calcutta, Sankhya(A) 191-196, 54 (1992).

20.Automorphisms Stability & Semi-stability of Planar DCS Graphs, JCISS, 1996, 15-26.

21.Prime Labelings and Prime Graphs- Constructions, Embeddings, Invited Talk, VTU Conference 20-23 April 2011.

*DCS- Distance Convex Simple Graphs

Contact this candidate