CHEN, J.; VAN DITMARSCH, H.; GRECO, G.; TZIMOULIS, A. . Neighbourhood Semantics for Graded Modal Logic. Bulletin of the Section of Logic, [S. l.], v. 50, n. 3, p. 373–395, 2021. DOI: 10.18778/0138-0680.2021.12. Disponível em: https://czasopisma.uni.lodz.pl/bulletin/article/view/8007. Acesso em: 19 apr. 2024.