@article{1183505309,
author = {Bell, P. O.},
title = {New systems of hypergeodesics defined on a surface},
journal = {Bull. Amer. Math. Soc.},
volume = {49},
number = {12},
year = {1943},
pages = { 575-580},
language = {en},
url = {http://dml.mathdoc.fr/item/1183505309}
}
Bell, P. O. New systems of hypergeodesics defined on a surface. Bull. Amer. Math. Soc., Tome 49 (1943) no. 12, pp. 575-580. http://gdmltest.u-ga.fr/item/1183505309/