LIU, Mo; FAN, Jie; VAN DITMARSCH, Hans; KUIJER, Louwe B. Logics for Knowability. Logic and Logical Philosophy, [S. l.], v. 31, n. 3, p. 385–426, 2021. DOI: 10.12775/LLP.2021.018. Disponível em: https://apcz.umk.pl/LLP/article/view/33886. Acesso em: 21 jan. 2025.