This publication is cited in the following articles:
V. V. Shumilova, “Spektr sobstvennykh kolebanii sloistoi sredy, sostoyaschei iz materiala Kelvina–Foigta i vyazkoi neszhimaemoi zhidkosti”, Sib. elektron. matem. izv., 17 (2020), 21–31
Shamaev A.S., Shumilova V.V., “Asymptotics of the Spectra of One-Dimensional Natural Vibrations in Media Consisting of Solid and Fluid Layers”, Dokl. Phys., 65:4 (2020), 153–156