LEWANDOWSKA, K. Russell’s Multiplicative Axiom. Philosophical Problems in Science (Zagadnienia Filozoficzne w Nauce), [S. l.], n. 50, p. 152–166, 2012. Disponível em: https://zfn.edu.pl/index.php/zfn/article/view/109. Acesso em: 2 feb. 2023.