%0 Journal Article
%A V. A. Srochko
%T On the optimality of singular controls in systems with after-effect
%J Differencialʹnye uravneniâ
%D 1976
%P 2275-2278
%V 12
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1976_12_12_a20/
%G ru
%F DE_1976_12_12_a20