Brink U, Kreienmeyer M, Peters K, Stein E. Aspects of Trefftz’ Method in BEM and FEM and their coupling. Comp. Assist. Methods Eng. Sci. [Internet]. 2023 Oct. 17 [cited 2025 Jun. 30];4(3-4):327-44. Available from: https://cames.ippt.pan.pl/index.php/cames/article/view/1553