TY  - JOUR
AU  - V. V. Nemytskii
TI  - Topological classification of singular points and generalized Ljapunov functions
JO  - Differencialʹnye uravneniâ
PY  - 1967
SP  - 359
EP  - 370
VL  - 3
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1967_3_3_a0/
LA  - ru
ID  - DE_1967_3_3_a0
ER  -