GOMOLIŃSKA, A. Derivability of rules from rule complexes. Logic and Logical Philosophy, [S. l.], v. 10, n. 10, p. 21–44, 2004. DOI: 10.12775/LLP.2002.002. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2002.002. Acesso em: 22 jan. 2022.