TY  - JOUR
AU  - E. E. Barbashina
TI  - Necessary optimality conditions for systems of differential equations that are not solved with respect to the derivative
JO  - Differencialʹnye uravneniâ
PY  - 1981
SP  - 1478
EP  - 1480
VL  - 17
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1981_17_8_a11/
LA  - ru
ID  - DE_1981_17_8_a11
ER  -