Article Günther Eder; (2021)
Frege on intuition and objecthood in projective geometry (/isis/citation/CBB221284966/)

Article Belna, Jean-Pierre; (2006)
Objectivité et principe de dualité: Le paragraphe 26 des Fondements de l'arithmétique de Frege (/isis/citation/CBB000770988/)

Article Maria Alessandra Vaccaro; (2020)
Historical Origins of the Nine-Point Conic. the Contribution of Eugenio Beltrami (/isis/citation/CBB706274093/)

Book Gandon, Sébastien; (2012)
Russell's Unknown Logicism: A Study in the History and Philosophy of Mathematics (/isis/citation/CBB001201203/)

Article Sakarovitch, Joël; (2007)
Géométrie descriptive et expérimentations constructives (/isis/citation/CBB000850302/)

Chapter Jeremy Gray; (2015)
A Note on Lines and Planes in Euclid’s Geometry (/isis/citation/CBB826243941/)

Article Günther Eder; (2021)
Frege and the origins of model theory in nineteenth century geometry (/isis/citation/CBB484264044/)

Article Boos, William; (1985)
“The true” in Gottlob Frege's “Über die Grundlagen der Geometrie” (/isis/citation/CBB000048186/)

Chapter Hallett, Michael; (2010)
Frege and Hilbert (/isis/citation/CBB001211657/)

Thesis David E. Dunning; (2020)
Writing the Rules of Reason: Notations in Mathematical Logic, 1847–1937 (/isis/citation/CBB517005733/)

Book Ricketts, Tom; Potter, Michael D.; (2010)
The Cambridge Companion to Frege (/isis/citation/CBB001211647/)

Article Marchisotto, Elena Anne Corie; (2006)
The Projective Geometry of Mario Pieri: A Legacy of Georg Karl Christian von Staudt (/isis/citation/CBB000601010/)

Thesis Maurer, Bertram; (1997)
Karl Culmann und die Graphische Statik: Anhang mit Umfangreichen Culmann-Texten (/isis/citation/CBB001560704/)

Article Reck, Erich H.; (2013)
Frege, Dedekind, and the Origins of Logicism (/isis/citation/CBB001212886/)

Book Maurer, Bertram; (1998)
Karl Culmann und die Graphische Statik: Anhang mit Umfangreichen Culmann-Texten (/isis/citation/CBB000470924/)

Article Voelke, Jean-Daniel; (2008)
Le théorème fondamental de la géométrie projective: évolution de sa preuve entre 1847 et 1900 (/isis/citation/CBB000850594/)

Book Künne, Wolfgang; (2010)
Die Philosophische Logik Gottlob Freges: ein Kommentar; mit den Texten des Vorworts zu Grundgesetze der Arithmetik und der Logischen Untersuchungen I--IV (/isis/citation/CBB001210615/)

Article Angelelli, Ignacio; (2012)
Frege's Ancestral and Its Circularities (/isis/citation/CBB001214121/)

Chapter Tappenden, Jamie; (2006)
The Riemannian Background to Frege's Philosophy (/isis/citation/CBB000800119/)

Book Weiner, Joan; (2004)
Frege Explained: From Arithmetic to Analytic Philosophy (/isis/citation/CBB000772767/)