PIETRUSZCZAK, A. On Theses without Iterated Modalities of Modal Logics Between C1 and S5. Part 2. Bulletin of the Section of Logic, [S. l.], v. 46, n. 3/4, p. 197–218, 2017. DOI: 10.18778/0138-0680.46.3.4.03. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/3255. Acesso em: 2 may. 2024.