Topologies associated to some decision statistical functions Vasile Preda — 1981 Colloquium Mathematicae
On some sufficient optimality conditions in multiobjective differentiable programming Vasile C. Preda — 1992 Kybernetika
On Duality for Nonsmooth Lipschitz Optimization Problems Vasile Preda; Miruna Beldiman; Anton Bătătorescu — 2009 The Yugoslav Journal of Operations Research