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@article{MAN_1993__296_4_165102, author = {Daniel S. Silver}, title = {Augmented group systems and n-knots.}, journal = {Mathematische Annalen}, pages = {585--594}, publisher = {mathdoc}, volume = {296}, number = {4}, year = {1993}, zbl = {0793.57012}, url = {http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165102/} }
Daniel S. Silver. Augmented group systems and n-knots.. Mathematische Annalen, Tome 296 (1993) no. 4, pp. 585-594. http://geodesic.mathdoc.fr/item/MAN_1993__296_4_165102/