Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1969__44_139394, author = {J. Levine}, title = {Knot {Cobordism} {Groups} in {Codimension} {Two.}}, journal = {Commentarii mathematici Helvetici}, pages = {229--244}, publisher = {mathdoc}, volume = {44}, year = {1969}, zbl = {0176.22101}, url = {http://geodesic.mathdoc.fr/item/CMH_1969__44_139394/} }
J. Levine. Knot Cobordism Groups in Codimension Two.. Commentarii mathematici Helvetici, Tome 44 (1969), pp. 229-244. http://geodesic.mathdoc.fr/item/CMH_1969__44_139394/