@article{1178240693,
author = {Sakamoto, Kunio},
title = {Planar geodesic immersions},
journal = {Tohoku Math. J. (2)},
volume = {29},
number = {4},
year = {1977},
pages = { 25-56},
language = {en},
url = {http://dml.mathdoc.fr/item/1178240693}
}
Sakamoto, Kunio. Planar geodesic immersions. Tohoku Math. J. (2), Tome 29 (1977) no. 4, pp. 25-56. http://gdmltest.u-ga.fr/item/1178240693/