CHUCHMAN, I.Ya.; GUTIK, O.V. Topological monoids of almost monotone injective co-finite partial selfmaps of the set of positive integers. Carpathian Mathematical Publications, [S. l.], v. 2, n. 1, p. 119–132, 2010. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/3998. Acesso em: 3 may. 2024.