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://trrest.vot.pl/ojsus/index.php/FOLIA/article/view/4347. Acesso em: 4 jul. 2025.