%0 Journal Article
%A V. I. Plotnikov
%T Existence theorems on optimizing functions for optimal systems with distributed parameters
%J Izvestiya. Mathematics 
%D 1970
%P 697-719
%V 4
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1970_4_3_a11/
%G en
%F IM2_1970_4_3_a11