NDUBUISI, U.; U.I, A.-I.; O.G, U. Congruences on *-Simple Type A I-Semigroups. JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 16, p. 8199–8207, 2019. DOI: 10.24297/jam.v16i0.7980. Disponível em: https://rajpub.com/index.php/jam/article/view/7980. Acesso em: 26 apr. 2024.