Grigorenko, A. Y., Borysenko, M. Y., & Boychuk, O. V. (2020). Determination of the frequencies and forms of free vibrations of pentagonal plates by the finite-element method. Bulletin of Taras Shevchenko National University of Kyiv. Physics and Mathematics, 1-2, 61-66. https://doi.org/10.17721/1812-5409.2020/1-2.10