TY  - JOUR
AU  - P. A. Frolov
TI  - Connected components of real elliptic systems on the plane
JO  - Doklady Akademii Nauk
PY  - 1968
SP  - 1350
EP  - 1353
VL  - 181
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1968_181_6_a13/
LA  - ru
ID  - DAN_1968_181_6_a13
ER  -