%0 Journal Article
%A V. I. Plotnikov
%T Necessary conditions of optimality for control systems of general type
%J Doklady Akademii Nauk
%D 1971
%P 275-278
%V 199
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1971_199_2_a6/
%G ru
%F DAN_1971_199_2_a6