GHEORGHIU, Alexander V.; PYM, David J. Definite Formulae, Negation-as-Failure, and the Base-Extension Semantics of Intuitionistic Propositional Logic. Bulletin of the Section of Logic, [S. l.], v. 52, n. 2, p. 239–266, 2023. DOI: 10.18778/0138-0680.2023.16. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/14153. Acesso em: 23 jul. 2024.