TY  - JOUR
AU  - N. B. Medvedeva
TI  - Monodromy criterion for a singular point of a plane vector field
JO  - Algebra i analiz
PY  - 2001
SP  - 130
EP  - 150
VL  - 13
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/AA_2001_13_2_a4/
LA  - ru
ID  - AA_2001_13_2_a4
ER  -