@article{01814783,
title = {A characterization of regular saddle surfaces in the hyperbolic and spherical three-space.},
journal = {Abstract and Applied Analysis},
volume = {7},
year = {2002},
pages = {349-355},
doi = {10.1155/S1085337502203036},
zbl = {1022.53015},
language = {en},
url = {http://dml.mathdoc.fr/item/01814783}
}
Kalikakis, Dimitrios E. A characterization of regular saddle surfaces in the hyperbolic and spherical three-space.. Abstract and Applied Analysis, Tome 7 (2002) pp. 349-355. doi : 10.1155/S1085337502203036. http://gdmltest.u-ga.fr/item/01814783/