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Necessary optimality conditions for nonsmooth generalized semi-infinite programming problems
Kanzi, N., (2010)
Optimality and duality for nonsmooth multiobjective fractional programming with mixed constraints
Nobakhtian, S., (2008)
Optimality Criteria and Duality in Multiobjective Programming Involving Nonsmooth Invex Functions
Nobakhtian, S., (2006)