SANGOOR, Azhar Aziz. ((Contractible Edge of Eulerian Graph- Regular )). University of Thi-Qar Journal, [S. l.], v. 11, n. 4, p. 15_29, 2019. Disponível em: https://jutq.utq.edu.iq/index.php/main/article/view/61. Acesso em: 9 oct. 2025.