LI, Chunhua; WANG, Limin; XU, Baogen; HUANG, Huawei. An automorphism theorem on certain type B semigroups. Italian Journal of Pure and Applied Mathematics, [S. l.], v. 42, p. 616–623, 2019. Disponível em: https://journals.uniurb.it/index.php/ijpam/article/view/7206. Acesso em: 27 oct. 2026.