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Number of items: **35**.

Appa, Gautam, Euler, R., Kouvela, Anastasia, Magos, D. and Mourtos, I.
(2016)
*On the completability of incomplete orthogonal Latin rectangles.*
Discrete Mathematics
.
ISSN 0012-365X

Magos, Dimitris, Mourtos, Ioannis and Appa, Gautam
(2012)
*A polyhedral approach to the alldifferent system.*
Mathematical Programming, 132
(1-2).
pp. 209-260.
ISSN 0025-5610

Pitsoulis, Leonidas, Papalamprou, Konstantinos, Appa, Gautam and Kotnyek, Balázs
(2009)
*On the representability of totally unimodular matrices on bidirected graphs.*
Discrete Mathematics, 309
(16).
pp. 5024-5042.
ISSN 0012-365X

Appa, Gautam, Kotnyek, Balázs, Papalamprou, Konstantinos and Pitsoulis, Leonidas
(2007)
*Optimization with binet matrices.*
Operations Research Letters, 35
(3).
pp. 345-352.
ISSN 0167-6377

Appa, Gautam, Argyris, N. and Williams, H. Paul
(2006)
*A methodology for cross-evaluation in DEA.*
Operational Research working papers,
LSEOR 06.81.
Operational Research Group, Department of Management, London School of Economics and Political Science, London, UK.
ISBN 0753017032

Appa, Gautam, Pitsoulis, Leonidas and Williams, H. Paul, eds.
(2006)
*Handbook on modelling for discrete optimization.*
International series in operations research & management science
, 88
.
Springer, New York, USA.
ISBN 9780387329413

Appa, Gautam and Williams, H. Paul
(2006)
*A new framework for the solution of DEA models.*
European Journal of Operational Research, 172
(2).
pp. 604-615.
ISSN 0377-2217

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2006)
*A new class of facets for the Latin square polytope.*
Discrete Applied Mathematics, 154
(6).
pp. 900-911.
ISSN 0166-218X

Appa, Gautam, Magos, D., Mourtos, Ioannis and Janssen, Jeannette
(2006)
*On the Orthogonal Latin Square polytope.*
Discrete Mathematics, 306
(2).
pp. 171-187.
ISSN 0012-365X

Appa, Gautam, Magos, D., Mourtos, Ioannis and Pitsulis, L.
(2006)
*Modelling for feasibility - the case of mutually orthogonal Latin squares problem.*
In: Appa, Gautam, Pitsoulis, Leonidas and Williams, H. Paul, (eds.)
Handbook on Modelling for Discrete Optimization.
International series in operations research & management science(88).
Springer, New York, US, pp. 103-128.
ISBN 0387329412

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2006)
*On multi-index assignment polytopes.*
Linear Algebra and Its Applications, 416
(2-3).
pp. 224-241.
ISSN 0024-3795

Appa, Gautam and Argyris, Nikolaos
(2006)
*On regions of stability for preserving efficiency classifications in data envelopment analysis.*
Operational Research Group working papers,
LSEOR 06.87.
Operational Research Group, Department of Management, London, UK.
(Unpublished)

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2006)
*Searching for mutually orthogonal Latin squares via integer and constraint programming.*
European Journal of Operational Research, 173
(2).
pp. 519-530.
ISSN 0377-2217

Appa, Gautam and Kotnyek, Balázs
(2006)
*A bidirected generalisation of network matrices.*
Networks, 47
(4).
pp. 185-198.
ISSN 1097-0037

Appa, Gautam, Becker, Kai Helge and Papadaki, Katerina
(2006)
*A brief encounter with sudoku.*
LSE Magazine
.
p. 20.
ISSN 0023-639X

Appa, Gautam, Argyris, Nikolaos and Parthasarathy, S.
(2006)
*A faster algorithm for data envelopment analysis.*
Operational Research Group working papers,
LSEOR 06.84.
Operational Research Group, Department of Management, London, UK.
(Unpublished)

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2005)
*On the system of two all_different predicates.*
Operational Research working papers,
LSEOR 05.74.
Department of Operational Research, London School of Economics and Political Science, London, UK.
ISBN 0753016966

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2005)
*On the system of two all_different predicates.*
Information Processing Letters, 94
(3).
pp. 99-105.
ISSN 0020-0190

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2004)
*An LP-based proof for the non-existence of a pair of orthogonal Latin squares for n = 6.*
Operations Research Letters, 32
(4).
pp. 336-344.
ISSN 0167-6377

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2004)
*A branch and cut algorithm for a four-index assignment problem.*
Journal of the Operational Research Society, 55
(3).
pp. 298-307.
ISSN 0160-5682

Appa, Gautam and Kotnyek, Balázs
(2004)
*Rational and integral k-regular matrices.*
Discrete Mathematics, 275
(1-3).
pp. 1-15.
ISSN 0012-365X

Appa, Gautam, Magos, D. and Mourtos, Ioannis
(2004)
*LP relaxations of multiple all_different predicates.*
Lecture Notes in Computer Science, 3011
.
pp. 364-369.
ISSN 0302-9743

Appa, Gautam and Kotnyek, Balázs
(2003)
*Optimization with binet matrices.*
Operational Research working papers,
LSEOR 03.59.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam
(2002)
*On the uniqueness of solutions to linear programs.*
Journal of the Operational Research Society, 53
(10).
pp. 1127-1132.
ISSN 0160-5682

Appa, Gautam, Mourtos, Ioannis and Magos, D.
(2002)
*Integrating constraint and integer programming for the orthogonal Latin squares problem.*
Operational Research working papers,
LSEOR 01.47.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam, Mourtos, Ioannis and Magos, D.
(2002)
*An LP-based proof of the non-existence of a pair of Orthogonal Latin Squares for n = 6.*
Operational Research working papers,
LSEOR 02.51.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam and Williams, H. Paul
(2002)
*A formula for the solution of DEA models.*
Operational Research working papers,
LSEOR 02.49.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam
(2000)
*Is my solution unique? On the uniqueness of solutions to linear programs.*
Operational Research working papers,
LSEOR 00.33.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam and Sridharan, R.
(2000)
*OR helps poor in a controversial irrigation project.*
Interfaces, 30
(2).
pp. 13-28.
ISSN 0092-2102

Appa, Gautam and Yue, M.
(2000)
*A reply to Zhu: how useful or accurate is this alternative?*
Journal of the Operational Research Society, 51
(3).
p. 379.
ISSN 0160-5682

Appa, Gautam and Yue, M.
(1999)
*On setting scale efficient targets in DEA.*
Journal of the Operational Research Society, 50
(1).
pp. 60-69.
ISSN 0160-5682

Appa, Gautam and Yue, Ming
(1996)
*On measuring scale efficiency and setting scale efficient targets in DEA.*
Operational Research working papers,
LSEOR 96.22/2.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam
(1994)
*Using primal-dual relationship in mixed integer programming.*
Operational Research working papers,
LSEOR 94.13.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam and Giannikos, Ioannis
(1992)
*Using duality information from a mixed integer program to derive new and old results for the rectilinear obnoxious facility location problem.*
Operational Research working papers,
LSEOR 92.2.
Department of Operational Research, London School of Economics and Political Science, London, UK.

Appa, Gautam and Sridharan, R.
(1992)
*Report on the canal affected people and the downstream impact of the Sardar Sarover projects.*
Operational Research working papers,
LSEOR 92.1.
Department of Operational Research, London School of Economics and Political Science, London, UK.

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