géométrie non euclidienne
1962 / Nikolai Ivanovich Lobachevskii: The Man behind the First Non-Euclidean Geometry / Alexander Vucinich / Isis 53 (1962) p. 465 [lien]
2012 / Zöllner’s Universe / Helge Kragh / Physics in Perspective 14 (2012) p. 392 [doi]