@article{1183407790,
author = {Halsted, George Bruce},
title = {Lambert's non-euclidean geometry},
journal = {Bull. New York Math. Soc.},
volume = {2},
number = {4},
year = {1893},
pages = { 79-80},
language = {en},
url = {http://dml.mathdoc.fr/item/1183407790}
}
Halsted, George Bruce. Lambert's non-euclidean geometry. Bull. New York Math. Soc., Tome 2 (1893) no. 4, pp. 79-80. http://gdmltest.u-ga.fr/item/1183407790/