I. AMEN, A.; H. SALIH, R. Limit Cycles of Lorenz System with Hopf Bifurcation. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 5, n. 1, p. 81–99, 2008. DOI: 10.33899/csmj.2008.163951 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/37109. Acesso em: 17 dec. 2025.