TOURLAKIS, G. A New Arithmetically Incomplete First-Order Extension of Gl All Theorems of Which Have Cut Free Proofs. Bulletin of the Section of Logic, [S. l.], v. 45, n. 1, p. 17–31, 2016. DOI: 10.18778/0138-0680.45.1.02. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/1475. Acesso em: 1 may. 2024.