Y . THANOON, T.; FAWZI AL-AZZAWI, S. Stability Conditions of Zero Solution for Third Order Differential Equation in Critical Case. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 5, n. 1, p. 127–138, 2008. DOI: 10.33899/csmj.2008.163955 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/37099. Acesso em: 17 dec. 2025.