WOLTER, F. The algebraic face of minimality. Logic and Logical Philosophy, [S. l.], v. 6, n. 6, p. 225–240, 1998. DOI: 10.12775/LLP.1998.013. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.1998.013. Acesso em: 25 jul. 2024.