An Efficient Spectral Petrov-Galerkin Method for Nonlinear Hamiltonian Systems. Communications in Computational Physics, [S. l.], v. 26, n. 5, p. 1249–1273, 2019. DOI: 10.4208/cicp.2019.js60.11. Disponível em: https://global-sci.com/index.php/cicp/article/view/6756. Acesso em: 6 dec. 2025.