CZAKON, Marcin. Some Results Concerning Axioms for Equivalential Calculus. Bulletin of the Section of Logic, [S. l.], v. 54, n. 3, p. 325–341, 2025. DOI: 10.18778/0138-0680.2025.05. Disponível em: https://www.czasopisma.uni.lodz.pl/bulletin/article/view/25206. Acesso em: 6 dec. 2025.