TY  - JOUR
AU  - A. D. Ioffe
AU  - V. M. Tikhomirov
TI  - Duality in problems of the calculus of variations
JO  - Doklady Akademii Nauk
PY  - 1968
SP  - 789
EP  - 792
VL  - 180
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1968_180_4_a4/
LA  - ru
ID  - DAN_1968_180_4_a4
ER  -