Besler, G. (2016) “Philosophical and Mathematical Correspondence between Gottlob Frege and Bertrand Russell in the years 1902-1904. Some Uninvestigated Topics”, Folia Philosophica, 35. Available at: https://trrest.vot.pl/ojsus/index.php/FOLIA/article/view/4347 (Accessed: 4 July 2025).