TY  - JOUR
AU  - Allen E. Hatcher
TI  - Cocordance and Isotopy of Smooth Embeddings in Low Codimensions.
JO  - Inventiones mathematicae
PY  - 1973
SP  - 223
EP  - 232
VL  - 21
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1973__21_142229/
ID  - IM_1973__21_142229
ER  -