Koskela, Julius Hierarchical Cascading Algorithm for 2-D FEM Simulation of Finite SAW Devices. [electronic resource] - IEEE transactions on ultrasonics, ferroelectrics, and frequency control 10 2018 - 1933-1942 p. digital Publication Type: Journal Article ISSN: 1525-8955 Standard No.: 10.1109/TUFFC.2018.2852603 doi