Bifurcation of Equilibria in a Class of Planar Piecewise Smooth Systems with 3 Parameters. Communications in Mathematical Research, [S. l.], v. 25, n. 3, p. 204–212, 2021. Disponível em: https://global-sci.com/index.php/cmr/article/view/8613. Acesso em: 5 dec. 2025.