FREITAS, João A. Teixeira de. Time integration and the Trefftz Method Part II - Second-order and hyperbolic problems. Computer Assisted Methods in Engineering and Science, [S.l.], v. 10, n. 4, p. 465-477, jan. 2023. ISSN 2956-5839. Available at: <https://cames.ippt.pan.pl/index.php/cames/article/view/1058>. Date accessed: 22 july 2024.