Sergei A., Khakhomov, Barsukov Sergei D., and Semchenko Igor V. 2013. “Acoustic Waves in Ceramics With the Electro Induced Anisotropy ”. Journal of Automation, Mobile Robotics and Intelligent Systems 3 (4): 199-201. https://jamris.d.tomp.pl/index.php/JAMRIS/article/view/87.