%0 Journal Article
%A V. A. Srochko
%T An investigation of the second variation on singular controls
%J Differencialʹnye uravneniâ
%D 1974
%P 1050-1066
%V 10
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1974_10_6_a7/
%G ru
%F DE_1974_10_6_a7