SAYWARD, C. A Fregean conception of singular existence. Logic and Logical Philosophy, [S. l.], v. 24, n. 1, p. 3–18, 2014. DOI: 10.12775/LLP.2014.006. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2014.006. Acesso em: 20 oct. 2021.