@article{1138043544, author = {Hasanis, Th. and Vlachos, Th.}, title = {$2$-type surfaces in a hypersphere}, journal = {Kodai Math. J.}, volume = {19}, number = {1}, year = {1996}, pages = { 26-38}, language = {en}, url = {http://dml.mathdoc.fr/item/1138043544} }
Hasanis, Th.; Vlachos, Th. $2$-type surfaces in a hypersphere. Kodai Math. J., Tome 19 (1996) no. 1, pp. 26-38. http://gdmltest.u-ga.fr/item/1138043544/