TY  - JOUR
AU  - B. T. Polyak
TI  - A general method for solving extremal problems
JO  - Doklady Akademii Nauk
PY  - 1967
SP  - 33
EP  - 36
VL  - 174
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1967_174_1_a8/
LA  - ru
ID  - DAN_1967_174_1_a8
ER  -