KETLAND, J. Computation and Indispensability. Logic and Logical Philosophy, [S. l.], v. 30, n. 1, p. 61–78, 2020. DOI: 10.12775/LLP.2020.011. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2020.011. Acesso em: 29 mar. 2024.