%0 Journal Article %A È. R. Smol'yakov %T Theorems on the existence of symmetric active equilibria in noncooperative programmed differential games %J Differencialʹnye uravneniâ %D 1997 %P 776-781 %V 33 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1997_33_6_a8/ %G ru %F DE_1997_33_6_a8