PIETRUSZCZAK, A. On Theses Without Iterated Modalities of Modal Logics Between C1 and S5. Part 1. Bulletin of the Section of Logic, [S. l.], v. 46, n. 1/2, p. 111–133, 2017. DOI: 10.18778/0138-0680.46.1.2.09. Disponível em: https://www.czasopisma.uni.lodz.pl/bulletin/article/view/2933. Acesso em: 4 may. 2024.