TY - JOUR AU - L. D. Kudryavtsev TI - Variational problems with a different number of boundary conditions JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1990 SP - 85 EP - 104 VL - 192 UR - http://geodesic.mathdoc.fr/item/TM_1990_192_a7/ LA - ru ID - TM_1990_192_a7 ER -