%0 Journal Article
%A N. N. Krasovskii
%T Extremal control in a nonlinear positional differential game
%J Doklady Akademii Nauk
%D 1972
%P 520-523
%V 203
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1972_203_3_a3/
%G ru
%F DAN_1972_203_3_a3