V. D. Derech, “Complete classification of finite semigroups for which the inverse monoid of local automorphisms is a permutable semigroup”, Ukr. Mat. Zhurn., vol. 68, no. 11, pp. 1571–1578, Nov. 2016, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1943