MATERNA, P. The notion of problem, intuitionism and partiality. Logic and Logical Philosophy, [S. l.], v. 17, n. 4, p. 287–303, 2009. DOI: 10.12775/LLP.2008.016. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2008.016. Acesso em: 1 may. 2024.