Analysis of homoclinic bifurcation in a nonlinearly damped duffing-van der Pol oscillator under the excitation of two-forcing terms. Nonlinear Studies, [S. l.], v. 28, n. 4, 2021. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/2033. Acesso em: 13 sep. 2025.