TY  - JOUR
AU  - B. Mordukhovich
TI  - On the problem of the existence of optimal controls
JO  - Differencialʹnye uravneniâ
PY  - 1971
SP  - 2161
EP  - 2167
VL  - 7
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1971_7_12_a4/
LA  - ru
ID  - DE_1971_7_12_a4
ER  -