%0 Journal Article %A A. I. Egorov %T Conditions for optimality of systems containing links with distributed parameters %J Doklady Akademii Nauk %D 1966 %P 1261-1263 %V 171 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_171_6_a4/ %G ru %F DAN_1966_171_6_a4