DERECH, V. D. Classification of finite commutative semigroups for which the inverse monoid of local automorphisms is permutable. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 2, p. 176–184, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2564. Acesso em: 11 apr. 2025.