Book Reichardt, Hans; (1985)
Gauss und die Anfänge der nicht-euklidischen Geometrie. Mit Originalarbeiten von J. Bolyai, N.I. Lobatschewski und F. Klein (/isis/citation/CBB000031390/)

Article Abardia, Judit; Reventós, Agustí; Rodríguez, Carlos J.; (2012)
What Did Gauss Read in the Appendix? (/isis/citation/CBB001251202/)

Article Chen, Huiyong; (2011)
Study on the Approach to Realize the Thought of Gauss' Non-Euclidean Geometry (/isis/citation/CBB001210056/)

Book Alberto Cogliati; (2024)
La geometria non euclidea. Una breve storia dall’antichità a Poincaré (/isis/citation/CBB276091257/)

Thesis Richards, Joan L.; ()
Non-Euclidean geometry in 19th-century England: A study of changing perceptions of mathematical truth (/isis/citation/CBB000006968/)

Article Jemma Lorenat; (2022)
An Okapi Hypothesis: Non-Euclidean Geometry and the Professional Expert in American Mathematics (/isis/citation/CBB066890396/)

Article Boi, Luciano; (1996)
Les géométries non euclidiennes, le problème philosophique de l'espace et la conception transcendantale: Helmholtz et Kant, les néo-kantiens, Einstein, Poincaré et Mach (/isis/citation/CBB000072476/)

Article Izotov, G.E.; (1992)
K istorii opublikovaniia N.I. Lobachevskii sochinenii po “boobrazhaemoi” geometrii. (On the publishing history of Lobachevskii's work on “imaginary” geometry) (/isis/citation/CBB000051064/)

Book Beltrami, Eugenio; (1998)
La découverte de la géométrie non euclidienne sur la pseudosphère: Les lettres d'Eugenio Beltrami à Jules Hoüel (1868-1881). Introduction, notes et commentaires critiques par Boi, Luciano, Giacardi, Livia, Tazzioli, Rossana. Préface, Ch. Houzel et E. Knobloch (/isis/citation/CBB000082240/)

Article Giulio Peruzzi; Valentina Roberti; (2023)
Helmholtz and the geometry of color space: Gestation and development of Helmholtz’s line element (/isis/citation/CBB084267730/)

Book Gray, Jeremy J.; (2004)
János Bolyai, Non-Euclidean Geometry, and the Nature of Space (/isis/citation/CBB000750880/)

Article Amanda Paxton; (2021)
The Hard Math of Beauty: Gerard Manley Hopkins and "Spectral Numbers" (/isis/citation/CBB150662150/)

Article Christiansen, Andreas; (2009)
Bernt Michael Holmboe (1795--1850) and His Mathematics Textbooks (/isis/citation/CBB000931934/)

Article Capelo, António Cândido; Ferrari, Mario; (1982)
La “cuffia” di Beltrami: Storia e descrizione (/isis/citation/CBB000000126/)

Article Martins, Roberto de Andrade; (1995)
A influência das geometrias não-euclidianas no pensamento físico de século XIX (/isis/citation/CBB000068213/)

Article Stump, David; (1991)
Poincaré's thesis of the translatability of Euclidean and non-Euclidean geometries (/isis/citation/CBB000052800/)

Article Fuller, Steve; (1999)
Authorizing science studies: or, Why we have never had paradigms (/isis/citation/CBB000079981/)

Chapter Freguglia, Paolo; (2002)
Giuseppe Veronese's Studies on Four-Dimentional Descriptive Geometry (/isis/citation/CBB000430145/)

Article Shoji, Kota; (2006)
The Contact of Differential Geometry and Continuous Groups of Transformations: W. Killing's “Ueber die Grundlagen der Geometrie” (/isis/citation/CBB000772578/)

Article Cicenia, Salvatore; (1998)
Le lettere di E. Beltrami ad A. Genocchi sulle geometrie non Euclidee (/isis/citation/CBB000082249/)