TY  - JOUR
AU  - L. S. Lavrinovich
TI  - A certain class of systems of two differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1970
SP  - 1017
EP  - 1025
VL  - 6
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1970_6_6_a7/
LA  - ru
ID  - DE_1970_6_6_a7
ER  -