@article{1150997863, author = {Ando, Naoya}, title = {An umbilical point on a non-real-analytic surface}, journal = {Hiroshima Math. J.}, volume = {33}, number = {1}, year = {2003}, pages = { 1-14}, language = {en}, url = {http://dml.mathdoc.fr/item/1150997863} }
Ando, Naoya. An umbilical point on a non-real-analytic surface. Hiroshima Math. J., Tome 33 (2003) no. 1, pp. 1-14. http://gdmltest.u-ga.fr/item/1150997863/