@article{1200692533, author = {Yajima, Takeshi}, title = {On a characterization of knot groups of some spheres in $R\sp4$}, journal = {Osaka J. Math.}, volume = {6}, number = {1}, year = {1969}, pages = { 435-446}, language = {en}, url = {http://dml.mathdoc.fr/item/1200692533} }
Yajima, Takeshi. On a characterization of knot groups of some spheres in $R\sp4$. Osaka J. Math., Tome 6 (1969) no. 1, pp. 435-446. http://gdmltest.u-ga.fr/item/1200692533/