The Ehresmann-Schein-Nambooripad Theorem and its Successors. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 5, n. 4, p. 414–450, 2012. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/1535. Acesso em: 22 dec. 2024.