@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/