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@article{CMH_1993__68_2_140307, author = {Joel Hass and Peter Scott}, title = {Homotopy and isotopy in dimension three.}, journal = {Commentarii mathematici Helvetici}, pages = {341--364}, publisher = {mathdoc}, volume = {68}, number = {2}, year = {1993}, zbl = {0805.57008}, url = {http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140307/} }
Joel Hass; Peter Scott. Homotopy and isotopy in dimension three.. Commentarii mathematici Helvetici, Tome 68 (1993) no. 2, pp. 341-364. http://geodesic.mathdoc.fr/item/CMH_1993__68_2_140307/