TY  - JOUR
AU  - A. M. Vinogradov
TI  - Some homotopy properites of the space of imbeddings of the circle into a sphere or a ball
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 999
EP  - 1002
VL  - 156
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_156_5_a2/
LA  - ru
ID  - DAN_1964_156_5_a2
ER  -