DERECH, V. D. Structure of a Munn semigroup of finite rank every stable order of which is fundamental or antifundamental. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 61, n. 1, p. 52–60, 2009. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3000. Acesso em: 5 dec. 2025.