LEE, Cheuk-Yu; QIN, Qing-Hua; WANG, Hui. Trefftz functions and application to 3D elasticity. Computer Assisted Methods in Engineering and Science, [S. l.], v. 15, n. 3-4, p. 251–263, 2022. Disponível em: https://cames3.ippt.pan.pl/index.php/cames/article/view/734. Acesso em: 12 jan. 2025.