H. ISMAIL, T.; O. HAMAD, I. On the Generalized Curvature. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 3, n. 2, p. 83–98, 2006. DOI: 10.33899/csmj.2006.164070. Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36381. Acesso em: 17 dec. 2025.