%0 Journal Article
%A S. M. Aseev
%T A~method of smooth approximation in the theory of necessary optimality conditions for differential inclusions
%J Izvestiya. Mathematics 
%D 1997
%P 235-258
%V 61
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1997_61_2_a0/
%G en
%F IM2_1997_61_2_a0