Kompiš, V. and Štiavnicky, M. (2022) “Trefftz functions in FEM, BEM and meshless methods”, Computer Assisted Methods in Engineering and Science, 13(3), pp. 417–426. Available at: https://cames3.ippt.pan.pl/index.php/cames/article/view/943 (Accessed: 26 January 2025).