KLONOWSKI, M. Sequent Calculi for Beginners and Professionals. Logic and Logical Philosophy, [S. l.], v. 27, n. 1, p. 143–147, 2018. DOI: 10.12775/LLP.2018.003. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2018.003. Acesso em: 26 apr. 2024.