DROZDEK, A. Logic and ontology in the thought of Bolzano. Logic and Logical Philosophy, [S. l.], v. 5, n. 5, p. 3–18, 1997. DOI: 10.12775/LLP.1997.001. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.1997.001. Acesso em: 28 mar. 2024.