Pluymers B, Vanmaele C, Desmet W, Vandepitte D. Application of a hybrid finite element-Trefftz approach for acoustic analysis. Comp. Assist. Methods Eng. Sci. 2022;13(3):427-444. Accessed June 30, 2025. https://cames.ippt.pan.pl/index.php/cames/article/view/944