M.S. KHIDR, K.; SH. MUSTAFA, H. Vertical Flow in Viscous Thin Films. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 5, n. 1, p. 33–41, 2008. DOI: 10.33899/csmj.2008.163960 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/37103. Acesso em: 17 dec. 2025.