INDRZEJCZAK, A. Simple Decision Procedure for S5 in Standard Cut-Free Sequent Calculus. Bulletin of the Section of Logic, [S. l.], v. 45, n. 2, p. 125–140, 2016. DOI: 10.18778/0138-0680.45.2.05. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/1482. Acesso em: 4 may. 2024.