L. Opilska and J. Świder, “The analysis of surface wave propagation in a crystal with a monoclinic structure”, archacoust, vol. 7, no. 2, pp. 155–162, Mar. 2016, Accessed: Jan. 13, 2025. [Online]. Available: https://acoustics3.ippt.pan.pl/index.php/aa/article/view/3277