Lyapunov-Schmidt Method in Bifurcation Solutions of Nonlinear Fourth Order Differential Equation . University of Thi-Qar Journal of Science, [S. l.], v. 3, n. 1, p. 135–145, 2011. Disponível em: https://jsci.utq.edu.iq/index.php/main/article/view/218.. Acesso em: 21 nov. 2024.