D. Bochenek, Z. Surowiak, S. V. Gavrilyachenko, and M. F. Kupriyanov, “Multicomponent ceramic materials on the basis of PZT for the production of piezoelectric resonators”, Arch. Acoust., vol. 30, no. 1, Jan. 2005, Accessed: Jan. 18, 2026. [Online]. Available: https://acoustics.ippt.gov.pl/index.php/aa/article/view/507