TY  - JOUR
AU  - F. S. Berezovskaya
TI  - Index of a stationary point of a vector field on the plane
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1979
SP  - 77
VL  - 13
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1979_13_2_a6/
LA  - ru
ID  - FAA_1979_13_2_a6
ER  -