Grigorenko, A. Y.; Borysenko, M. Y.; Boychuk, O. V. Determination of the Frequencies and Forms of Free Vibrations of Pentagonal Plates by the Finite-Element Method. BTSNUKPhM 2020, No. 1-2, 61-66. https://doi.org/10.17721/1812-5409.2020/1-2.10.