%0 Journal Article %A O. V. Vasiliev %A F. M. Kirillova %T Optimal processes in two-parameter discrete systems %J Doklady Akademii Nauk %D 1967 %P 17-19 %V 175 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1967_175_1_a2/ %G ru %F DAN_1967_175_1_a2