H. ISMAIL, T.; O. HAMAD, I.; R. HAJI, R. On Some Nonstandard Asymptotic Approximation of Integrals and Series. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 2, n. 2, p. 33–40, 2005. DOI: 10.33899/csmj.2005.164081 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36821. Acesso em: 18 dec. 2025.