TY  - JOUR
AU  - S. L. Krushkal'
TI  - A new approach to variational problems of the theory of
JO  - Doklady Akademii Nauk
PY  - 1987
SP  - 1297
EP  - 1300
VL  - 292
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1987_292_6_a3/
LA  - ru
ID  - DAN_1987_292_6_a3
ER  -