%0 Journal Article %A L. D. Kudryavtsev %T Variational problems with a~different number of boundary conditions %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1990 %P 85-104 %V 192 %I mathdoc %U http://geodesic.mathdoc.fr/item/TM_1990_192_a7/ %G ru %F TM_1990_192_a7