%0 Journal Article %A L. Neishtadt %T General theory of variational problems with applications to optimal control %J Doklady Akademii Nauk %D 1966 %P 48-50 %V 171 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_171_1_a10/ %G ru %F DAN_1966_171_1_a10