LEEB, Hans-Peter. States of Affairs as Structured Extensions in Free Logic. Logic and Logical Philosophy, [S. l.], v. 30, n. 3, p. 361–384, 2020. DOI: 10.12775/LLP.2020.025. Disponível em: https://apcz.umk.pl/LLP/article/view/LLP.2020.025. Acesso em: 1 jul. 2025.