@article{GDZPPN00209066X,
title = {Cocordance and Isotopy of Smooth Embeddings in Low Codimensions.},
journal = {Inventiones mathematicae},
volume = {20},
year = {1973},
pages = {223-232},
zbl = {0254.57017},
url = {http://dml.mathdoc.fr/item/GDZPPN00209066X}
}
Hatcher, Allen E. Cocordance and Isotopy of Smooth Embeddings in Low Codimensions.. Inventiones mathematicae, Tome 20 (1973) pp. 223-232. http://gdmltest.u-ga.fr/item/GDZPPN00209066X/