@article{GDZPPN002087790, title = {Invariants of Knot Cobordism.}, journal = {Inventiones mathematicae}, volume = {9}, year = {1969}, pages = {98-110}, zbl = {0179.52401}, url = {http://dml.mathdoc.fr/item/GDZPPN002087790} }
LEVINE, J. Invariants of Knot Cobordism.. Inventiones mathematicae, Tome 9 (1969) pp. 98-110. http://gdmltest.u-ga.fr/item/GDZPPN002087790/