TY  - JOUR
AU  - E. K. Ershov
TI  - On structurally stable polynomial diffeomorphisms of the unit circle
JO  - Differencialʹnye uravneniâ
PY  - 1988
SP  - 687
EP  - 689
VL  - 24
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1988_24_4_a18/
LA  - ru
ID  - DE_1988_24_4_a18
ER  -