TY  - JOUR
AU  - È. S. Shpigelman
TI  - The existence of regular solutions of a plane quadratic system
JO  - Differencialʹnye uravneniâ
PY  - 1979
SP  - 1835
EP  - 1839
VL  - 15
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1979_15_10_a10/
LA  - ru
ID  - DE_1979_15_10_a10
ER  -