Trapezon, Kirill, Alexandr Trapezon, and Anatolii Orlov. “Analysis of Free Oscillations of Round Thin Plates of Variable Thickness With a Point Support”. Eastern-European Journal of Enterprise Technologies 3, no. 7 (105) (June 30, 2020): 6–12. Accessed July 20, 2024. https://journals.uran.ua/eejet/article/view/197463.