TY  - JOUR
AU  - V. I. Shevchenko
TI  - Some estimates for the number of connected components of a set of elliptic systems
JO  - Doklady Akademii Nauk
PY  - 1976
SP  - 322
EP  - 324
VL  - 228
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1976_228_2_a16/
LA  - ru
ID  - DAN_1976_228_2_a16
ER  -