@article{GDZPPN002418088,
title = {Verallgemeinerte Regelfl\"achen.},
journal = {Mathematische Zeitschrift},
volume = {147},
year = {1976},
pages = {261-272},
zbl = {0331.53011},
url = {http://dml.mathdoc.fr/item/GDZPPN002418088}
}
Giering, Oswald; Frank, Hubert. Verallgemeinerte Regelflächen.. Mathematische Zeitschrift, Tome 147 (1976) pp. 261-272. http://gdmltest.u-ga.fr/item/GDZPPN002418088/