DERECH, V. D. Structure of a finite commutative inverse semigroup and a finite bundle for which the inverse monoid of local automorphisms is permutable. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 63, n. 9, p. 1218–1226, 2011. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2799. Acesso em: 5 dec. 2025.