RIIS, S.; SITHARAM, M. Generating Hard Tautologies Using Predicate Logic and the Symmetric Group. BRICS Report Series, [S. l.], v. 5, n. 19, 1998. DOI: 10.7146/brics.v5i19.19425. Disponível em: https://tidsskrift.dk/brics/article/view/19425. Acesso em: 19 apr. 2024.