Lugovskyi, Oleksandr, Andrii Movchanyuk, and Volodymyr Fesich. “To the Question about the Calculation of the Ultrasonic Step-up Transformer of Vibrating Speed With the Developed Radiance Surface”. Mechanics and Advanced Technologies, no. 1(85) (April 14, 2019): 49–56. Accessed May 3, 2024. https://journal.mmi.kpi.ua/article/view/164346.