Article Cerroni, Cinzia (2007)
The Contributions of Hilbert and Dehn to Non-Archimedean Geometries and Their Impact on the Italian School. Revue d'Histoire des Mathématiques (p. 259). (/isis/citation/CBB000930656/) unapi

Article Epple, Moritz (1995)
Branch points of algebraic functions and the beginnings of modern knot theory. Historia Mathematica (pp. 241-401). (/isis/citation/CBB000069762/) unapi

Article Belin, Marie-Hélène (1988)
Les principes de la philosophie de Descartes: Remarques sur la duplicité d'une écriture. Archives de Philosophie (pp. 99-105). (/isis/citation/CBB000042379/) unapi

Article Magnus, Wilhelm (1978)
Max Dehn. Mathematical Intelligencer (pp. 132-143). (/isis/citation/CBB000024397/) unapi

Article Guggenheimer, H. (1977)
The Jordan curve theorem and an unpublished manuscript by Max Dehn. Archive for History of Exact Sciences (pp. 193-200). (/isis/citation/CBB000020553/) unapi