ZAJAC, Pavol; JOKAY, Matus. Computing Indexes and Periods of All Boolean Matrices Up to Dimension n=8. Computing and Informatics, [S. l.], v. 31, n. 6, p. 1329–1344, 2013. Disponível em: https://www.cai.sk/ojs/index.php/cai/article/view/1310. Acesso em: 1 may. 2025.