SALIM YOUNS ANAS YOUNS, A.; GHAFOOR SALIM, A. Study of Stability of Non-linear Model with Hyperbolic Secant Function. Journal of Education and Science, [S. l.], v. 28, n. 1, p. 106–120, 2019. DOI: 10.33899/edusj.2019.160917. Disponível em: https://edusj.uomosul.edu.iq/index.php/edusj/article/view/41595. Acesso em: 10 sep. 2025.