TY  - JOUR
AU  - A. Ya. Dubovitskii
AU  - A. A. Milyutin
TI  - Second variations in extremal problems with constraints
JO  - Doklady Akademii Nauk
PY  - 1965
SP  - 18
EP  - 21
VL  - 160
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1965_160_1_a3/
LA  - ru
ID  - DAN_1965_160_1_a3
ER  -