PIPERNO, S. DGTD methods using modal basis functions and symplectic local time-stepping: Application to wave propagation problems. European Journal of Computational Mechanics, [S. l.], v. 15, n. 6, p. 643–670, 2006. Disponível em: https://journals.riverpublishers.com/index.php/EJCM/article/view/2061. Acesso em: 18 may. 2026.