A Note on Construction of Higher-Order Symplectic Schemes from Lower-Order One via Formal Energies. Journal of Computational Mathematics, [S. l.], v. 17, n. 6, p. 561–568, 2021. Disponível em: https://global-sci.com/index.php/JCM/article/view/11341. Acesso em: 6 dec. 2025.