%0 Journal Article %A M. P. Dymkov %T Optimality conditions in a linear two-parameter differential-difference control system with constraints %J Differencialʹnye uravneniâ %D 1996 %P 225-231 %V 32 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1996_32_2_a10/ %G ru %F DE_1996_32_2_a10