%0 Journal Article
%A K. S. Musabekov
%T A necessary condition for optimality in a problem with a phase constraint
%J Diskretnyj analiz i issledovanie operacij
%D 1990
%P 46-56
%N 30
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DA_1990_30_a5/
%G ru
%F DA_1990_30_a5