RIENEN UV. Triangular Grids: A Review of Resonator and Waveguide Analysis with Classical FIT and Some Reflections on Yee-like FIT- and FEM-Schemes. ACES Journal [Internet]. 2022 Jun. 18 [cited 2026 May 7];19(1):73-8. Available from: https://journals.riverpublishers.com/index.php/ACES/article/view/16649