@article{GDZPPN002320797, title = {A Note on 2-fold Branched Covering Spaces of S3.}, journal = {Mathematische Annalen}, volume = {255}, year = {1981}, pages = {449-452}, zbl = {0451.57002}, url = {http://dml.mathdoc.fr/item/GDZPPN002320797} }
Kanenobu, Taizo. A Note on 2-fold Branched Covering Spaces of S3.. Mathematische Annalen, Tome 255 (1981) pp. 449-452. http://gdmltest.u-ga.fr/item/GDZPPN002320797/