Noyaux des sous-espaces de Banach réflexif d'un espace localement convexe -- An abstract theorem for planning procedures -- Estimation and regularity for the maximum lower solution of a unilateral problem -- Conjugacy in quasiconvex analysis -- Duality: some results in asymptotical elastoplasticity -- Sensitivity for non convex optimization problems -- A dual algorithm in quasi-convex optimization -- Etude d'une inequation quasi-variationnelle apparaissant en physique -- Vector measures with bounded variation: a topological property and some applications -- Computation of equilibrium price and quantity vectors -- Borel convex-valued multifunctions -- On the convergence of random convex sets -- An optimal design procedure for optimal control support.