Article L. D. Kay; (2023)
Felix Klein, Sophus Lie, contact transformations, and connexes (/isis/citation/CBB497891682/)

Article Lie, Sophus; (1985)
Three letters from Sophus Lie to Felix Klein on Parisian mathematics during the early 1880's. Translated by Rowe, David E. (/isis/citation/CBB000059169/)

Article Rowe, David E.; (1988)
Der Briefwechsel Sophus Lie--Felix Klein: Eine Einsicht in ihre persönlichen und wissenschaftlichen Beziehungen (/isis/citation/CBB000054892/)

Book Yaglom, I.M.; (1988)
Felix Klein and Sophus Lie: Evolution of the idea of symmetry in the 19th century. Translated by Sergei Sossinsky. Edited by Hardy Grant and Abe Shenitzer (/isis/citation/CBB000053494/)

Chapter Rowe, David E.; (1989)
The early geometrical works of Sophus Lie and Felix Klein (/isis/citation/CBB000062250/)

Article Hawkins, Thomas; (1991)
Jacobi and the birth of Lie's theory of groups (/isis/citation/CBB000039493/)

Chapter Alvarez, Rosa; (1988)
Fundamentos de la geometría y concepción del espacio en S. Lie (/isis/citation/CBB000051477/)

Book Hawkins, Thomas; (2000)
Emergence of the theory of Lie groups: An essay in the history of mathematics, 1869-1926 (/isis/citation/CBB000110932/)

Book Lie, Sophus; (1975)
Lie groups: History, frontiers, and applications. Vol. 1: Sophus Lie's 1880 transformation group paper. Translated by Michael Ackerman. Comments by Hermann, Robert (/isis/citation/CBB000022721/)

Article Hofmann, Karl H.; (1992)
Zur Geschichte des Halbgruppenbegriffs (/isis/citation/CBB000049967/)

Chapter Hawkins, Thomas; (1989)
Line geometry, differential equations, and the birth of Lie's theory of groups (/isis/citation/CBB000062387/)

Book Lie, Sophus; (1976)
Lie groups: History, frontiers, and applications. Vol. 3: Sophus Lie's 1884 differential invariant paper. Translated by Michael Ackerman. Comments and additional material by Hermann, Robert (/isis/citation/CBB000022724/)

Article Fritzsche, Bernd; (1991)
Einige Anmerkungen zu Sophus Lies Krankheit (/isis/citation/CBB000052118/)

Article Tripodi, Angelo; (1973)
Dall'Analysis situs di [Felix] Klein alla topologie contemporanea (/isis/citation/CBB000001612/)

Chapter Birkhoff, Garrett; Bennett, M.K.; (1988)
Felix Klein and his “Erlanger Programm” (/isis/citation/CBB000054685/)

Book Gray, Jeremy; (1999)
The symbolic universe: Geometry and physics, 1890-1930 (/isis/citation/CBB000083033/)

Article Tobies, Renate; (1979)
Zur internationalen wissenschaftsorganisatorischen Tätigkeit von Felix Klein (1849-1925) auf dem Gebiet des Mathematikunterrichts (/isis/citation/CBB000000296/)

Book de Saint-Gervais, Henri Paul; Poincaré, Henri; Klein, Christian Felix; (2010)
Uniformisation des surfaces de Riemann retour sur un théorème centenaire (/isis/citation/CBB001551391/)

Article Le, François; (2015)
“Geometrical equations”: Forgotten premises of Felix Klein's Erlanger Programm (/isis/citation/CBB001552558/)

Article Siqueira, Rogério Monteiro da; (2015)
Editing Geometries: The Geometry Volumes in Klein's Encyclopedia (/isis/citation/CBB001510467/)