Bifurcation by Application Fenichel’s Theorem to Singularity Perturbed ODEs. Journal of Zankoy Sulaimani - Part A, [S. l.], v. 19, n. 1, p. 177–190, 2017. DOI: 10.17656/jzs.10595. Disponível em: https://jzs.univsul.edu.iq/index.php/jzs/article/view/jzs-10595.. Acesso em: 17 apr. 2024.