Spiridonov, N. A., Gusakova, L. G., Kremenev, O. G., & Spiridonov, V. N. (2006). Membrane-type piezoceramic electroacoustic transducers. Technology and Design in Electronic Equipment, (3), 14-16. Retrieved from https://www.tkea.com.ua/index.php/journal/article/view/TKEA2006.3.14