BESLER, Gabriela. Philosophical and Mathematical Correspondence between Gottlob Frege and Bertrand Russell in the years 1902-1904. Some Uninvestigated Topics. Folia Philosophica, [S. l.], v. 35, 2016. Disponível em: https://journals.us.edu.pl/index.php/FOLIA/article/view/4347. Acesso em: 11 apr. 2025.