%0 Journal Article
%A V. D. Batukhtin
%T The differentiability of the cost of a differential approach game
%J Differencialʹnye uravneniâ
%D 1972
%P 2140-2148
%V 8
%N 12
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1972_8_12_a2/
%G ru
%F DE_1972_8_12_a2