@article{CMUC_1975_16_4_a8,
     author = {Afwat, Mohamed},
     title = {On {Weingarten} surfaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {707--712},
     year = {1975},
     volume = {16},
     number = {4},
     mrnumber = {0390977},
     zbl = {0313.53025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1975_16_4_a8/}
}