@article{GDZPPN002439980, title = {A Gauss-like map associated to a surface in IR3.}, journal = {Mathematische Zeitschrift}, volume = {209}, year = {1992}, pages = {363-374}, zbl = {0735.53003}, url = {http://dml.mathdoc.fr/item/GDZPPN002439980} }
Ferreira, Cecília. A Gauss-like map associated to a surface in IR3.. Mathematische Zeitschrift, Tome 209 (1992) pp. 363-374. http://gdmltest.u-ga.fr/item/GDZPPN002439980/