%0 Journal Article %A A. V. Pogorelov %T A certain variational problem in parametric form %J Doklady Akademii Nauk %D 1968 %P 1037-1038 %V 180 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1968_180_5_a4/ %G ru %F DAN_1968_180_5_a4