TY  - JOUR
AU  - R. I. Bogdanov
TI  - Versal deformations of singular points of vector fields on a plane
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1979
SP  - 63
EP  - 64
VL  - 13
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1979_13_1_a8/
LA  - ru
ID  - FAA_1979_13_1_a8
ER  -