@article{PPN235181684_0261+dmdlog21, title = {Helical Immersions Into a Unit Sphere.}, journal = {Mathematische Annalen}, volume = {261}, year = {1982}, pages = {63-80}, zbl = {0476.53033}, url = {http://dml.mathdoc.fr/item/PPN235181684_0261+dmdlog21} }
Sakamoto, Kunio. Helical Immersions Into a Unit Sphere.. Mathematische Annalen, Tome 261 (1982) pp. 63-80. http://gdmltest.u-ga.fr/item/PPN235181684_0261+dmdlog21/