TY  - JOUR
AU  - L. M. Vaserman
AU  - A. Ya. Lepin
TI  - Generalized Bernšteǐn conditions for nonlinear systems of ordinary differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 1107
EP  - 1113
VL  - 5
IS  - 6
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_6_a13/
LA  - ru
ID  - DE_1969_5_6_a13
ER  -