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@article{IM_1973__21_142229, author = {Allen E. Hatcher}, title = {Cocordance and {Isotopy} of {Smooth} {Embeddings} in {Low} {Codimensions.}}, journal = {Inventiones mathematicae}, pages = {223--232}, publisher = {mathdoc}, volume = {21}, year = {1973}, zbl = {0254.57017}, url = {http://geodesic.mathdoc.fr/item/IM_1973__21_142229/} }
Allen E. Hatcher. Cocordance and Isotopy of Smooth Embeddings in Low Codimensions.. Inventiones mathematicae, Tome 21 (1973), pp. 223-232. http://geodesic.mathdoc.fr/item/IM_1973__21_142229/