%0 Journal Article %A L. M. Vorob'ev %A T. M. Vorob'eva %T On the solution of variational problems of a non-classical type %J Doklady Akademii Nauk %D 1966 %P 270-273 %V 167 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_167_2_a4/ %G ru %F DAN_1966_167_2_a4