@article{PPN517516713_0003+dmdlog16,
title = {Lambert's Non-Euclidean Geometry.},
journal = {Bulletin of the New York Mathematical Society},
volume = {2},
year = {1893},
pages = {79-80},
zbl = {25.0079.01},
url = {http://dml.mathdoc.fr/item/PPN517516713_0003+dmdlog16}
}
Halsted, George Bruce. Lambert's Non-Euclidean Geometry.. Bulletin of the New York Mathematical Society, Tome 2 (1893) pp. 79-80. http://gdmltest.u-ga.fr/item/PPN517516713_0003+dmdlog16/