CASALS PONS, Jaume. La paradoxa dels mons possibles. Enrahonar. An international journal of theoretical and practical reason, [S. l.], v. 7, p. 39–41, 1984. DOI: 10.5565/rev/enrahonar.985. Disponível em: https://revistes.uab.cat/enrahonar/article/view/v7-8-casals. Acesso em: 10 dec. 2025.