@article{GDZPPN002338335,
title = {Augmented group systems and n-knots.},
journal = {Mathematische Annalen},
volume = {295},
year = {1993},
pages = {585-594},
zbl = {0793.57012},
url = {http://dml.mathdoc.fr/item/GDZPPN002338335}
}
Silver, Daniel S. Augmented group systems and n-knots.. Mathematische Annalen, Tome 295 (1993) pp. 585-594. http://gdmltest.u-ga.fr/item/GDZPPN002338335/