TY  - JOUR
AU  - A. D. Ioffe
TI  - An existence theorem for problems of the calculus of variations
JO  - Doklady Akademii Nauk
PY  - 1972
SP  - 277
EP  - 280
VL  - 205
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1972_205_2_a4/
LA  - ru
ID  - DAN_1972_205_2_a4
ER  -