@article{JRAM_1959__202_150410, author = {Walter O. Vogel}, title = {Regelfl\"achen im isotropen {Raum.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {196--214}, publisher = {mathdoc}, volume = {202}, year = {1959}, zbl = {0092.14408}, url = {http://geodesic.mathdoc.fr/item/JRAM_1959__202_150410/} }