CIAŁKOWSKI, Michał J. Trefftz functions as basic functions of FEM in application to solution of inverse heat conduction problem. Computer Assisted Methods in Engineering and Science, [S. l.], v. 8, n. 2-3, p. 247–260, 2023. Disponível em: https://cames3.ippt.pan.pl/index.php/cames/article/view/1167. Acesso em: 4 may. 2025.