W. PAJEWSKI, “Transversal bleustein-gulayev (B.G.) surface waves on a piezoelectric ceramic”, Arch. Acoust., vol. 2, no. 3, pp. 197–206, Mar. 2016, Accessed: Jan. 17, 2026. [Online]. Available: https://acoustics.ippt.gov.pl/index.php/aa/article/view/3483