1 - Geometrical researches on the theory of parallels - New edition
Lobatchevski, Nikolai͏̈ Ivanovitch (1792-1856)   /   Halsted, George Bruce (Trad.)

Cote : [60 LOB 1914]

2 - Non euclidean geometry : a critical and historical study of its development
Bonola, Roberto (1874-1911)   /   Bolyai, János (1802-1860)   /   Lobatchevski, Nikolai͏̈ Ivanovitch (1792-1856)   /   Carslaw, Horatio Scott (1870-1954) (Trad.)   /   Enriques, Federigo (1871-1946) (Préface)

Cote : [60 BON 55]