DR. LI FU; DR. LI FU. Metric Boolean Algebras and an Application to Propositional Logic. Global Journal of Science Frontier Research, [S. l.], v. 11, n. 5, p. 1–4, 2011. Disponível em: https://journalofscience.org/index.php/GJSFR/article/view/258. Acesso em: 3 may. 2024.