1. Lagrange multipliers for Pareto nonsmooth programming problems in Banach spaces;Abdouni;Optimization,1992
2. S. Aggarwal, Some Contributions to Multiobjective Programming, Ph.D. thesis submitted to the Department of Mathematics, University of Delhi, Delhi, India, 1991.
3. B. Aghezzaf, Second-order necessary and sufficient conditions of Kuhn–Tucker type in multiobjective optimization problems, in, Twelfth International Conference on Multiobjective Criteria Decision Making, Fernuniversität Hagen, Hagen, Germany, 1995.
4. Second-order optimality conditions in multiobjective optimization problems;Aghezzaf;J. Optim. Theory Appl.,1999
5. Regularity condition in vector optimization;Bigi;J. Optim. Theory Appl.,1999