[1] 
A. A. Shaikh, C. K. Mondal, I. Ahmad, Nonexistence of certain type of convex functions on a Riemannian manifolds with a pole, Journal of Geometry and Physics, 140 (2019), 104110 
2019 
Published 
[2] 
S. K. Gupta, D. Dangar, I. Ahmad, S. AlHomidan, A fuzzy multiple objective nonlinear optimization problem and its duality results, Journal of Intelligent and Fuzzy Systems , 36(2019), 13611373 
2019 
Published 
[3] 
A. Jayswal, Izhar Ahmad, B. Kumari , Vector variational inequalities on Hadamard manifolds involving strongly geodesic convex functions, Operations Research Letters 47(2019) , 110114. 
2019 
Published 
[4] 
A. Jayswal , S. Jha, A. K. Prasad and Izhar Ahmad, Secondorder symmetric duality in variational control problems over cone constraints, AsiaPacific Journal
of Operational Research , 35 (2018) 1850028, 19 pp

2018 
Published 
[5] 
M. A. Khan, Izhar Ahmad, Roughly geodesic Brpreinvex functions on Cartan Hadamard manifolds, Facta Universitatis, Series: Mathematics and Informatics, 33(2018), 325337 
2018 
Published 
[6] 
S. K. Gupta, D. Dangar, Izhar Ahmad and S. AlHomidan, Duality in nonlinear programming problems under fuzzy environment with exponential membership functions, Journal of Inequalities and Applications (2018) , Paper No. 218, 10 pp. 
2018 
Published 
[7] 
M.A. Khan, I. Ahmad, A. Aljohani, Criterion for generalized weakly fuzzy invex monotonocities, Advances in Fuzzy Systems, (2018) Art. ID 3749650, 9 
2018 
Published 
[8] 
Izhar Ahmad Deepak Singh, Bilal Ahmad Dar, Optimality and duality in nondifferentiable interval valued multiobjective programming , Int. J. Mathematics in Operational Research, 11 (2017), 332356 
2017 
Published 
[9] 
I. Ahmad, K. Kummari, V. Singh and A. Jayswal, Optimality and duality for nonsmooth minimax programming problems using convexifactor, Filomat, 31(2017), 45554570 
2017 
Published 
[10] 
A. Jayswal, I. Ahmad and J. Banerjee, Nonsmooth intervalvalued optimization and saddlepoint optimality criteria, Bulletin of the Malaysian Mathematical Sciences Society, 39(2016), 13911411 
2016 
Published 
[11] 
I. Ahmad, D. Singh and B. A. Dar, Optimality conditions for invex interval valued nonlinear programming, Filomat, 30 (2016), 21212138. 
2016 
Published 
[12] 
M. Tanveer, M. Mangal, I. Ahmad, and Y. H. Shao, "One norm linear programming support vector regression, Neurocomputing," Neurocomputing, vol. 173, pp. 15081518, 2016. 
2016 
Published 
[13] 
I. Ahmad, "Integral inequalities under beta function and preinvex type functions," SpringerPlus, vol. 5, pp. 16, 2016. 
2016 
Published 
[14] 
I.P. Debnath, S. K. Gupta, and I. Ahmad, "A note on second duality theorem for a multiobjective higherorder nondifferentiable symmetric dual programs," Opsearch, vol. 53, pp. 151156, 2016. 
2016 
Published 
[15] 
Ahmad, I., D. Singh, B. A. Dar, and S. AlHomidan, "On interval valued functions and Mangasarian type duality involving Hukuhara derivative, Journal of Computational Analysis and Applications," Journal of Computational Analysis and Applications, vol. 21, pp. 881896, 2016. 
2016 
Published 
[16] 
S. Choudhury., A. Jayswal, and I. Ahmad, "Second order monotonicities and second order variationallike inequality problems," Rendicanti Circula Mathematica Palermo, vol. 65, pp. 123137, 2016. 
2016 
Published 
[17] 
A. Jayswal, K. Kummari, and I. Ahmad, "Higherorder duality for minimax fractional programming problem containing arbitrary norms," J. Adv. Math. Stud., vol. 8, pp. 121136, 2015. 
2015 
Published 
[18] 
A. Jayswal, I. Ahmad, and A. K. Prasad, "Higherorder fractional symmetric duality over cone condtraints," Journal of Mathematical Modelling and Algorithms in Operations Research, vol. 14, pp. 91101, 2015. 
2015 
Published 
[19] 
A. Jayswal, I. Ahmad, and Krishna Kummari, "Optimality conditions and duality in multiobjective fractional programming involving right upper ?Diniderivative functions," Miskolc Mathematical Notes, vol. 16, pp. 887906, 2015. 
2015 
Published 
[20] 
I. Ahmad, D. Singh, and B. A. Bar, "Optimality conditions in multiobjective programming problems with interval valued objective functions," Control and Cybernetics, vol. 44, pp. 1945, 2015. 
2015 
Published 
[21] 
A. Jayswal, K. Kummari, and I. Ahmad, "Sufficiency and duality in minimax fractional programming with generalized (phi, rho)invexity," Mathematical Reports, vol. 17, pp. 183200, 2015. 
2015 
Published 
[22] 
I. Ahmad and S. AlHomidan, "Sufficiency and duality in nondifferentiable multiobjective programming involving higher order strong convexity," Journal of Inequalities and Applications, vol. 3191, pp. 111, 2015. 
2015 
Published 
[23] 
A. jayswal, I. Ahmad, and K. Kummari, "Duality for minimax fractional programming problems under second order (phi, rho)invexity," Dynamics of Continuous, Discrete and Impulsive Systems, Series A: Mathematical Analysis, vol. 21, no. 2, pp. 291310, 2014. 
2014 
Published 
[24] 
M. Ali Khan, I. Ahmad, and F.R. AlSolamy, "Geodesic rpreinvex functions on Riemanian manifolds," Journal of Inequalities and Applications, vol. 2014, no. 1, pp. 144, 2014. 
2014 
Published 
[25] 
A. Jayswal, I. Ahmad, and A. K. Prashad, "Duality in multiobjective fractional programming problems involving (Hp, r) invex functions
," Journal of Applied Mathematics and Informatics, vol. 32, pp. 99111, 2014. 
2014 
Published 
[26] 
A. Jayswal, I. Ahmad, K. Kummari, and S. AlHomidan, "On minimax programming problems involving right upperDiniderivative functions," Journal of Inequalities and Applications, no. 326, pp. 115, 2014. 
2014 
Published 
[27] 
Anurag Jayswal, Ioan StancuMinasian, and I. Ahmad, "Second order duality for minmax fractional programming problem involving (F, a, ?, d)type I functions," Bulletin of the Malaysian Mathematical Science Society, vol. 37, no. 3, pp. 893906, 2014. 
2014 
Published 
[28] 
I. Ahmad, Z. Husain, and S. AlHomidan, "Mixed type symmetric duality for multiobjective variational problems with cone constraints," International Transactions in Operational Research, vol. 21, no. 2, pp. 291310, 2014. 
2014 
Published 
[29] 
Ahmad, I. and Z. Husain, "Second order fractional duality," Southeast Asian Bulletin of Mathematics, vol. 38, pp. 110, 2014. 
2014 
Published 
[30] 
S. K. Gupta, D. Dangar, and I. Ahmad, "On second order duality for nondifferentiable minimax fractional programming problems involving typeI functions," The ANZIAM Journal, vol. 55, no. EMCA2013, pp. 479494, 2014. 
2014 
Published 
[31] 
A. Jayswal, A.K. Prasad, and I. Ahmad, "On minimax fractional programming problems involving generalized (Hp, r)Invex functions," Journal of Industrial and Management Optimization, vol. 10, no. 4, pp. 10011018, 2014. 
2014 
Published 
[32] 
G Muhiuddin, Abdullah M Al roqi, and I. Ahmad, "Nondifferentiable minimax fractional programming with higherorder type I functions
," Journal of Inequalities and Applications, no. 484, pp. 114, 2013. 
2013 
Published 
[33] 
A. Jayswal, A.K. Prasad, I. Ahmad, and R.P. Agarwal, "Duality for semiinfinite programming problems involving (Hp, r)invex functions," Journal of Inequalities and Applications, no. 200, pp. 114, 2013. 
2013 
Published 
[34] 
I. Ahmad, "Second order nondifferentiable minimax fractional programming with square root terms," Filomat, vol. 27, no. 1, pp. 126133, 2013. 
2013 
Published 
[35] 
Ahmad, I., A. Jayswal, and J. Banerjee, "On Intervalvalued optimization problems with generalized invex functions," Journal of Inequalities and Applications, vol. 2013, pp. 313, 2013. 
2013 
Published 
[36] 
S. Sharma and I. Ahmad, "Sufficiency in nonsmooth multiobjective fractional programming," Journal of Applied Mathematics and Informatics, vol. 31, no. 12, pp. 189197, 2013. 
2013 
Published 
[37] 
A. Jayswal, A.K. Prasad, and I. Ahmad, "Generalized (Hp, r)invexity in multiobjective programming problems
," Advanced Modeling and Optimization, vol. 15, no. 3, pp. 801813, 2013. 
2013 
Published 
[38] 
I. Ahmad and Z. Husain, "Second order symmetric duality in multiobjective programming involving cones," Optimization Letters, vol. 7, no. 6, pp. 13531365, 2013. 
2013 
Published 
[39] 
I. Ahmad, Ravi P Agarwal, and A. Jayswal, "Higher order duality in nondifferentiable fractional programming involving
generalized convexity
," Journal of Computational Analysis and Applications, vol. 15, no. 8, pp. 14441455, 2013. 
2013 
Published 
[40] 
Anurag Jayswal, Ioan StancuMinasian, and I. Ahmad, "Multiobjective Programming Problem Involving B(p,r)Type I Functions," in Proceedings of the World Congress on Engineering 2012 Vol I
WCE 2012, July 4  6, 2012, London, U.K. ISBN: 9789881925138, ISSN: 20780958 (Print), 2012, pp. 16. 
2012 

[41] 
I. Ahmad, "Unified higher order duality in nondifferentiable multiobjective
programming involving cones
," Mathematical and Computer Modelling, vol. 55, no. 34, pp. 419425, 2012. 
2012 
Published 
[42] 
I. Ahmad, "Higherorder duality in nondifferentiable minimax fractional programming involving generalized convexity," Journal of Inequalities and Applications, vol. 2012, no. 306, pp. 18, 2012. 
2012 
Published 
[43] 
A. Iqbal, S. Ali, and I. Ahmad, "On Geodesic EConvex Sets, Geodesic EConvex Functions and EEpigraphs," Journal of Optimization Theory and Applications, vol. 155, no. 1, pp. 239251, Oct. 2012. 
2012 
Published 
[44] 
R. P. Agarwal, I. Ahmad, and S. AlHomidan, "Optimality and duality for nondifferentiable multiobjective programming problems involving generalized (F, Î±, Ï, d) type I functions," Journal of Nonlinear and Convex Analysis, vol. 13, no. 4, pp. 733744, 2012. 
2012 
Published 
[45] 
R.P. Agarwal, I. Ahmad, A. Iqbal, and S. Ali, "Generalized invex sets and preinvex functions on Riemannian manifolds," Taiwanese Journal of Mathematics, vol. 16, no. 5, pp. 17191732, 2012. 
2012 
Published 
[46] 
R. P. Agarwal, I. Ahmad, Akhlad Iqbal, and S. Ali, "Geodesic Ginvex sets and semistrictly geodesic $\eta$priinvex functions," Optimization, vol. 61, no. 9, pp. 11691174, 2012. 
2012 
Published 
[47] 
I. Ahmad and Z. Husain, "A note on converse duality in nonlinear programming with cone constraints," Dynamics of Continuous, Discrete and Impulsive Systems, Series A: Mathematical Analysis, vol. 18, no. 4, pp. 525533, 2011. 
2011 
Published 
[48] 
A.Jayswal, Stancu Minasian, and I. Ahmad, "On sufficiency and duality for a class of intervalvalued programming problems," Applied Mathematics and Computation, vol. 218, no. 8, pp. 41194127, 2011. 
2011 
Published 
[49] 
Akhlad Iqbal, I. Ahmad, and S. Ali, "Some properties of geodesic semiEconvex functions," Nonlinear Analysis: Theory, Methods & Applications, no. 74, pp. 68056813, 2011. 
2011 
Published 
[50] 
I. Ahmad, Z. Husain, and S. AlHomidan, "Second order duality in nondifferentiable fractional programming," Nonlinear Analysis: Real World Applications, vol. 12, pp. 11031110, 2011. 
2011 
Published 
[51] 
R. P. Agarwal, I. Ahmad, S.K. Gupta, and N. Kailey, "Generalized secondorder mixed symmetric duality in nondifferentiable mathematical programming," Abstract and Applied Analysis, vol. 2011, no. 103597, pp. 14, 2011. 
2011 
Published 
[52] 
Anurag Jayswal, I. Ahmad, and Dilip Kumar, "Nondifferentiable minimax fractional programming problem with nonsmooth generalized convex functions
," Communications on Applied Nonlinear Analysis, vol. 18, no. 4, pp. 5775, 2011. 
2011 
Published 
[53] 
A. Jayswal, I. Ahmad, and S. AlHomidan, "Sufficiency and duality for nonsmooth multiobjective programming problems involving generalized (F, Î±, Ï, Ó©)dvunivex functions," Mathematical and Computer Modelling, vol. 53, pp. 8190, 2011. 
2011 
Published 
[54] 
I. Ahmad, S. K. Gupta, and A. Jayswal, "On sufficiency and duality for nonsmooth multiobjective programming problems involving generalized Vrinvex functions," Nonlinear Analysis: Theory, Methods & Applications, no. 74, pp. 59205928, 2011. 
2011 
Published 
[55] 
I. Ahmad, S.K. Gupta, N. Kailey, and R. P. Agarwal, "Duality in nondifferentiable minimax fractional programming with B(p,r)invexity," Journal of Inequalities and Applications, vol. 2011, no. 75, pp. 115, 2011. 
2011 
Published 
[56] 
R. P. Agarwal, I. Ahmad, and S. K. Gupta, "A note on higherorder nondifferentiable symmetric duality in multiobjective programming," Applied Mathematics Letters, no. 24, pp. 13081311, 2011. 
2011 
Published 
[57] 
I. Ahmad, "Nonsmooth minimax programming with (Ï†, Ï)invex functions"
," in Proceeding of the Annual International Conference on Operations Research and Statistics, Penang, Malaysia, ISBN:9789810884079, 2011, pp. 168173. ISBN:9789810884079 
2011 

[58] 
I. Ahmad, "On second order duality for minimax fractional programming problems with generalized convexity
," Abstract and Applied Analysis, vol. 2011, no. 563924, pp. 15, 2011. 
2011 
Published 
[59] 
I. Ahmad, S. AlHomidan, and Sarita Sharma, "Duality for nondifferentiable multiobjective variational problems with generalized type I functions," Dynamics of Continuous, Discrete and Impulsive Systems, Series A: Mathematical Analysis, vol. 18, no. 4, pp. 443455, 2011. 
2011 
Published 
[60] 
I. Ahmad, "Efficiency and duality in nondifferentiable multiobjective programming involving directional derivative
," Applied Mathematics, vol. 2, no. 4, pp. 452460, 2011. 
2011 
Published 
[61] 
I. Ahmad and S. Sharma, "Sufficiency and duality for multiobjective variational control problems with generalized (F, Î±, Ï, Ó©)Vconvexity," Nonlinear Analysis: Theory, Methods & Applications, vol. 72, pp. 25642579, 2010. 
2010 
Published 
[62] 
I. Ahmad and R. P. Agarwal, "Second order converse duality for nonlinear programming," The Journal of Nonlinear Sciences and its Applications, vol. 3, pp. 234244, 2010. 
2010 
Published 
[63] 
A. Iqbal, I. Ahmad, and S. Ali, "Strong geodesic Î±preinvexity and invariant Î±monotonicity on Riemmanian manifolds," Numerical Functional Analysis and Optimization, vol. 31, pp. 13421361, 2010. 
2010 
Published 
[64] 
R. P. Agarwal, I. Ahmad, and A. Jayswal, "HigherOrder Symmetric Duality in Nondifferentiable Multiobjective Programming Problems Involving Generalized Cone Convex Functions," Mathematical and Computer Modelling, vol. 52, pp. 16441650, 2010. 
2010 
Published 
[65] 
I. Ahmad, "Efficiency and duality in nonsmooth multiobjective programming with (F, Î±, Ï, Ó©)dvunivexity," Advances in Mathematical Sciences and Applications, vol. 20, pp. 399412, 2010. 
2010 
Published 
[66] 
I. Ahmad and S. AlHomidan, "Sufficiency and duality in nondifferentiable multiobjective programming under generalized d_I univexity," in 2010 International Conference on Computational and Mathematical Methods in Science and Engineering
, 2010, pp. 3658. 
2010 

[67] 
I. Ahmad and Z. Husain, "Multiobjective mixed symmetric duality involving cones," Computers & Mathematics with Applications, vol. 59, pp. 319326, 2010. 
2010 
Published 
[68] 
R. P. Agarwal, I. Ahmad, Z. Husain, and Anurag Jayswal, "Optimality and duality in nonsmooth multiobjective optimization involving Vtype I invex functions
," Journal of Inequalities and Applications, vol. 2010, no. 898626, pp. 14, 2010. 
2010 
Published 
[69] 
I. Ahmad and Z. Husain, "On multiobjective second order symmetric duality with cone constraints," European Journal of Operational Research, vol. 204, pp. 402409, 2010. 
2010 
Published 
[70] 
Z. Husain, I. Ahmad, and S. Sharma, "Second order duality for minimax fractional programming," Optimization Letters, vol. 3, pp. 277286, 2009. 
2009 
Published 
[71] 
Z. Husain, A. Jayswal, and I. Ahmad, "Second order duality for nondifferentiable minimax programming problems with generalized convexity," Journal of Global Optimization, vol. 44, pp. 593608, 2009. 
2009 
Published 
[72] 
I. Ahmad, Z. Husain, and S. Sharma, "Higher order duality in nondifferentiable minimax programming with generalized type I functions," Journal of Optimization Theory and Applications, vol. 141, pp. 112, 2009. 
2009 
Published 
[73] 
I. Ahmad, A. Iqbal, and S. Ali, "On properties of geodesic etapriinvex functions," Advances in Operations Research, no. ID381831, pp. 10, 2009. 
2009 
Published 
[74] 
I. Ahmad and S. sharma, "Sufficiency and duality in minimax fractional subset programming involving generalized type I functions," Journal of Applied Mathematics and Informatics, vol. 26, pp. 9911010, 2009. 
2009 
Published 
[75] 
I. Ahmad and Z. Husain, "Second order duality in multiobjective programming," Journal of Applied Analysis, vol. 14, pp. 131148, 2008. 
2008 
Published 
[76] 
I. Ahmad and S. Sharma, "Multiobjective fractional symmetric duality involving cones," Journal of Applied Mathematics and Informatics, vol. 26, pp. 151160, 2008. 
2008 
Published 
[77] 
I. Ahmad, Z. Husain, and S. Sharma, "Second order duality in nondifferentiable minimax programming involving type I functions," Journal of Computational and Applied Mathematics, vol. 215, pp. 91102, 2008. 
2008 
Published 
[78] 
T. R. Gulati, S. K. Gupta, and I. Ahmad, "Second order symmetric duality with cone constraints," Journal of Computational and Applied Mathematics, vol. 220, pp. 347354, 2008. 
2008 
Published 
[79] 
I. Ahmad and S. sharma, "Symmetric duality for multiobjective fractional variational problems involving cones," European Journal of Operational Research, vol. 188, pp. 695704, 2008. 
2008 
Published 
[80] 
Z. Husain and I. Ahmad, "Note on MondWeir type nondifferentiable second order symmetric duality," Optimization Letters, vol. 2, pp. 599604, 2008. 
2008 
Published 
[81] 
I. Ahmad, M. Yaqoob, and A. Ahmed, "Symmetric duality for fractional variational problems with cone constraints," Journal of Applied Mathematics and Computing, vol. 23, pp. 281292, 2007. 
2007 
Published 
[82] 
I. Ahmad and S. Sharma, "Optimality conditions and duality in nonsmooth multiobjective optimization," Journal of Nonlinear and Convex Analysis, vol. 8, pp. 417430, 2007. 
2007 
Published 
[83] 
T. R. Gulati, I. Ahmad, and D.Agarwal, "Sufficiency and duality in multiobjective programming under generalized type I functions," Journal of Optimization Theory and Applications, vol. 135, pp. 411427, 2007. 
2007 
Published 
[84] 
I. Ahmad, Z. Husain, and S. Sharma, "Higher order duality in nondifferentiable multiobjective programming," Numerical Functional Analysis and Optimization, vol. 28, pp. 9891002, 2007. 
2007 
Published 
[85] 
I. Ahmad and S. Sharma, "Second order duality in nondifferentiable multiobjective programming," Numerical Functional Analysis and Optimization, vol. 28, pp. 975988, 2007. 
2007 
Published 
[86] 
I. Ahmad and S. Sharma, "Sufficiency in multiobjective subset programming involving generalized type I functions," Journal of Global Optimization, vol. 39, pp. 473481, 2007. 
2007 
Published 
[87] 
Ahmad, I. and Z. Husain, "Minimax mixed integer symmetric duality for multiobjective variational problems," European Journal of Operational Research, vol. 177, pp. 7182, 2007. 
2007 
Published 
[88] 
I. Ahmad, "Symmetric duality for multiobjective fractional variational problems with generalized convexityins," Information Sciences, vol. 176, pp. 21922207, 2006. 
2006 
Published 
[89] 
I. Ahmad and Z. Husain, "Second order  convexity and duality in multiobjective programming," Information Sciences, vol. 176, pp. 30943103, 2006. 
2006 
Published 
[90] 
I. Ahmad and T. R. Gulati, "Mixed symmetric duality for nondifferentiable programming problems," Opsearch, vol. 43, pp. 296308, 2006. 
2006 
Published 
[91] 
I. Ahmad and Z. Husain, "Optimality conditions and duality in nondifferentiable minimax fractional programming with generalized convexity," Journal of Optimization Theory and Applications, vol. 129, pp. 255275, 2006. 
2006 
Published 
[92] 
I. Ahmad and Z. Husain, "Duality in nondifferentiable minimax fractional programming with generalized convexity," Applied Mathematics and Computation, vol. 176, pp. 545551, 2006. 
2006 
Published 
[93] 
I. Ahmad, "Second order symmetric duality in nondifferentiable multiobjective programming," Information Sciences, vol. 173, pp. 2334, 2005. 
2005 
Published 
[94] 
I. Ahmad, "Multiobjective mixed symmetric duality with invexity," New Zealand Journal of Mathematics, vol. 34, pp. 19, 2005. 
2005 
Published 
[95] 
I. Ahmad and Z. Husain, "Nondifferentiable second order symmetric duality in multiobjective programming," Applied Mathematics Letters, vol. 18, pp. 721728, 2005. 
2005 
Published 
[96] 
I. Ahmad and Z. Husain, "On nondifferentiable second order symmetric duality," Asia Pacific Journal of Operational Research, vol. 22, pp. 1931, 2005. 
2005 
Published 
[97] 
I. Ahmad, T. R. Gulati, and A. Ahmed, "Duality in nondifferentiable fractional fractional minimax programming," Journal of Indian Society of Statistics and Operations Research, vol. 26, pp. 1325, 2005. 
2005 
Published 
[98] 
I. Ahmad and Z. Husain, "On symmetric duality in nondifferentiable mathematical programming with Fconvexity," Journal of Applied Mathematics and Computing, vol. 19, pp. 371384, 2005. 
2005 
Published 
[99] 
I. Ahmad, "Sufficient and duality in multiobjective programming with generalized (F,p)convexity," Journal of Applied Analysis, vol. 11, pp. 1932, 2005. 
2005 
Published 
[100] 
I. Ahmad, "Second order symmetric duality for nondifferentiable minimax mixed integer programs," Southeast Asian Bulletin of Mathematics, vol. 29, pp. 843849, 2005. 
2005 
Published 
[101] 
I. Ahmad and T. R. Gulati, "Mixed type duality for multiobjective variational problems with generalized (F,p)convexity," Journal of Mathematical Analysis and Applications, vol. 306, pp. 669683, 2005. 
2005 
Published 
[102] 
I. Ahmad, "Optimality conditions and mixed duality in nondifferentiable programming," Journal of Nonlinear and Convex Analysis, vol. 5, pp. 113119, 2004. 
2004 
Published 
[103] 
I. Ahmad and Z. Husain, "On nondifferentiable second order symmetric duality in mathematical programming," Indian Journal of Pure and Applied Mathematics, vol. 35, pp. 665676, 2004. 
2004 
Published 
[104] 
I. Ahmad, "Sufficient optimality conditions for nondifferentiable programming," Aligarh Bulletin of Mathematics, vol. 22, pp. 113117, 2003. 
2003 
Published 
[105] 
I. Ahmad, "Optimality conditions and duality in fractional minimax programming involving generalized Ïconvexity," International Journal of Management and Systems, vol. 19, pp. 165180, 2003. 
2003 
Published 
[106] 
T. R. Gulati, I. Ahmad, and I. Husain, "Second order symmetric duality with generalized convexity," Opsearch, vol. 38, pp. 210222, 2001. 
2001 
Published 
[107] 
T. R. Gulati and I. Ahmad, "Multiobjective duality using Fritz John conditions," Asia Pacific Journal of Operational Research, vol. 15, pp. 6374, 1998. 
1998 
Published 
[108] 
T. R. Gulati, I. Ahmad, and I. Husain, "Symmetric duality for minimax variational problems," Mathematical Methods of Operations Research, vol. 48, pp. 8196, 1998. 
1998 
Published 
[109] 
T. R. Gulati and I. Ahmad, "Second order symmetric duality for nonlinear minimax integer programs," European Journal of Operational Research, vol. 101, pp. 122129, 1997. 
1997 
Published 
[110] 
T. R. Gulati, I. Ahmad, and I. Husain, "Symmetric duality for nondifferentiable minimax mixed integer programming problems," Optimization, vol. 39, pp. 6984, 1997. 
1997 
Published 
[111] 
T. R. Gulati and I. Ahmad, "Efficiency and duality in multiobjective fractional programming," Opsearch, vol. 32, pp. 3143, 1995. 
1995 
Published 
[112] 
S. K. Gupta, D. Dangar, I. Ahmad, S. AlHomidan, A fuzzy multiple objective nonlinear optimization problem and its duality results, Journal of Intelligent and Fuzzy Systems , 36(2019), 13611373. 

Published 