A. MANAA, S.; Y. HAWELL, L. The Finite Difference Methods for φ4 Klein-Gordon Equation. AL-Rafidain Journal of Computer Sciences and Mathematics, [S. l.], v. 5, n. 2, p. 47–63, 2008. DOI: 10.33899/csmj.2008.163970 . Disponível em: https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36989. Acesso em: 18 dec. 2025.