On Duality for Nonsmooth Lipschitz Optimization Problems Vasile Preda; Miruna Beldiman; Anton Bătătorescu — 2009 The Yugoslav Journal of Operations Research
Optimality and Duality for a Class of Nondifferentiable Minimax Fractional Programming Problems Antoan Bătătorescu; Miruna Beldiman; Iulian Antonescu; Roxana Ciumara — 2009 The Yugoslav Journal of Operations Research