TY  - JOUR
AU  - L. S. Rakovshchik
TI  - On a condition for unlimited applicability of Chaplyguin's theorem on inequalities to systems of first order differential equations
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 378
EP  - 379
VL  - 117
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_117_3_a5/
LA  - ru
ID  - DAN_1957_117_3_a5
ER  -