HUMBERSTONE, Lloyd. Exploring Essential Occurrence. Logic and Logical Philosophy, [S. l.], v. 35, n. 2, p. 169–279, 2025. DOI: 10.12775/LLP.2025.022. Disponível em: https://apcz.umk.pl/LLP/article/view/55817. Acesso em: 26 jun. 2026.