TY  - JOUR
AU  - V. B. Lidskii
AU  - P. A. Frolov
TI  - Connectivity components of normally solvable elliptic systems on the plane
JO  - Doklady Akademii Nauk
PY  - 1970
SP  - 728
EP  - 731
VL  - 192
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1970_192_4_a5/
LA  - ru
ID  - DAN_1970_192_4_a5
ER  -