TAKANO, Mitio. New Modification of the Subformula Property for a Modal Logic. Bulletin of the Section of Logic, [S. l.], v. 49, n. 3, p. 255–268, 2020. DOI: 10.18778/0138-0680.2020.15. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/6148. Acesso em: 23 jul. 2024.