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T.R. Gulati andIzhar Ahmad, Second order symmetric duality for nonlinear minimax integer programs,European Journal of Operational Research, 101(1997), 122-129.ISI
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T.R. Gulati, I. Husain andIzhar Ahmad, Symmetric duality for non-differentiable minimax mixed integer programming problems ,Optimization, 39(1997), 69-84.ISI
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T.R. Gulati, I. Husain andIzhar Ahmad, Symmetric duality for minimax variational problems,Mathematical Methods of Operations Research, 48(1998),81-96.ISI
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I. Ahmadand Z. Husain, On non-differentiable second order symmetric duality,Asia-Pacific Journal of Operational Research, 22(2005), 19-31.ISI
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Izhar Ahmad, Second order symmetric duality in non-differentiable multi-objective programming,Information Sciences, 173 (2005),23-34.ISI
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I. Ahmadand Z. Husain, Nondifferentiable second order symmetric duality in multi-objective programming ,Applied Mathematics Letters, 18(2005),721-728.ISI
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Izhar Ahmadand T. R. Gulati, Mixed type duality for multi-objective variational problems with generalized (f, ρ)-convexity,Journal of MathematicalAnalysis and Applications, 306(2005), 669-683.ISI
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Izhar Ahmad, Symmetric duality for multi-objective fractional variationalproblems with generalized invexity,Information Sciences, 176(2006), 2192-2207.ISI
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I. Ahmadand Z. Husain, Duality in non-differentiable minimax fractional programming with generalized convexity ,Applied Mathematics and Computation, 178(2006), 545-551. (ISI)
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I. Ahmadand Z. Husain, Second order (F, α, ρ, d)-convexity and duality in multi-objective programming,Information Sciences, 176(2006),3094-3103.ISI
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I. Ahmadand Z. Husain, Optimality conditions and duality in non-differentiable minimax fractional programming with generalized convexity,Journalof Optimization Theory and Applications, 129(2006), 255-275.ISI
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I. Ahmadand Z. Husain, Minimax mixed integer symmetric duality for multi-objective variational problems,European Journal of Operational Research, 177(2007), 71-82.ISI
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T.R. Gulati,I. Ahmadand D. Agarwal, Sufficiency and duality in multi-objective programming under generalized type-I functions ,Journal of OptimizationTheory and Applications, 135(2007), 411-427 .ISI
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Izhar Ahmadand Sarita Sharma, Sufficiency in multi-objective subset programming-involving generalized type-I functions,Journal of Global Optimization, 39(2007), 473-481.ISI
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I. Ahmadand Sarita Sharma, Optimality conditions and duality in non-smooth multi-objective optimization,Journal of Nonlinear and ConvexAnalysis, 8(2007), 417-430.ISI
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I. Ahmadand Sarita Sharma, Second order duality for non-differential multi-objective programming problems,Numerical Functional Analysis andOptimization, 28 (2007), 975988.ISI
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I. Ahmad, Z. Husain and Sarita Sharma, Higher order duality in nondifferentiablemultiobjective programming,Numerical Functional Analysis andOptimization, 28 (2007), 989-1002.ISI
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I. Ahmadand Sarita Sharma, Symmetric duality for multi-objective fractional variational problems involving cones,European Journal of OperationalResearch, 188(2008), 695-704.ISI
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I. AhmadZ. Husain and Sarita Sharma, Second order duality in nondifferentiableminmax programming involving type-I functions,Journal of Computationaland Applied Mathematics, 215(2008), 91-102.ISI
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T.R. Gulati, S.K. Gupta andI. Ahmad, Second-order symmetric duality with cone constraints,Journal of Computational and Applied Mathematics, 220(2008),347-354.ISI
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Z. Husain, AnuragJayswal andI. Ahmad, Second order duality for nondifferentiableminimax programming problems with generalized convexityJournalof Global Optimization, 44(2009), 593-608.ISI
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I. Ahmad, Z. Husain and SaritaSharma,Second order duality for minmax fractional programming ,Optimization Letters,3(2009),277-286.ISI
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I. Ahmadand Z. Husain, Multiobjective mixed symmetric duality involving cones,Computers and Mathematics with Applications, 59( 2010), 319-326.ISI
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I. Ahmadand Sarita Sharma, Sufficiency and duality for multi-objective variational control problems with generalized (F, α, ρ, d)-Vconvexity(SaritaSharma),Nonlinear Analysis: Theory, Methods and Applications, 72 (2010), 2564-2579.ISI
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R. P. Agarwal,I. Ahmadand A. Jayswal, Higher-Order Symmetric Duality In Non-differentiable Multi-objective Programming Problems Involving Generalized Cone Convex Functions,Mathematical and Computer Modelling, 52(2010), 1644-1650.ISI
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A. Iqbal,I. Ahmadand S. Ali, Strong geodesicα-preinvexity and invariantα-monotonicity on Riemmanian manifolds,Numerical Functional Analysis and Optimization, 31(2010), 1342-1361.ISI
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I. Ahmad, Z. Husain and S. Al-Homidan, Second order duality in non-differentiable fractional programming,Nonlinear Analysis: Real World Applications, 12 (2011), 1103-1110ISI
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Ravi P. Agarwal,Izhar Ahmad, S.K. Gupta, A note on higher-order nondifferentiablesymmetric duality in multiobjective programming,Applied MathematicsLetters, 24(2011), 1308-1311.ISI
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I. Ahmad, S. K. Gupta, and A. Jayswal, On sufficiency and duality for non-smooth multi-objective programming problems involving generalized V-r-invex functions,Nonlinear Analysis: Theory, Methods&Applications, 74(2011), 5920-5928.ISI
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A.Jayswal, StancuMinasian, andI. Ahmad, On sufficiency and duality for class of interval-valued programming problems,Applied Mathematics and Computation, 218 (2011), 4119-4127 .ISI
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I. Ahmad, Unified higher order duality in non-differentiable multi-objective programming involving cones ,Mathematical and Computer Modelling, 55(2012), 419-425.ISI
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A. Iqbal, S. Ali, andI. Ahmad, On Geodesic E-Convex Sets, Geodesic EConvexFunctions and E-Epigraphs,Journal of Optimization Theory and Applications, 155(2012), 239-251.ISI
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R. P. Agarwal,I. Ahmad,and S. Al-Homidan, Optimality and duality for non-differentiable multi-objective programming problems involving generalized (F, α, ρ, d) type I functions,Journal of Nonlinear and Convex Analysis,13(2012), 733-744.ISI
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I. Ahmad,Ravi P. agarwal and A. Jayswal , Higher order duality in nondifferentiablefractional programming involving generalized convexity,Journalof Computational Analysis and Applications15(2013), 1444-1455.ISI
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I. Ahmadand Z. Husain, Second order symmetric duality in multiobjective programming involving cones,Optimization Letters, 2013. Accepted.ISI