1. Perov, D.V., Nemytova, O.V., and Rinkevich, A.B., Excitation of a circular-aperture transducer with an echo pulse reflected from a spherical surface, Russ. J. Nondestr. Test., 2016, vol. 52, no. 12, pp. 673–684.
2. Nemytova, O.V., Rinkevich, A.B., and Perov, D.V., Instantaneous frequency estimation used for the classification of echo signals from different reflectors, Russ. J. Nondestr. Test., 2012, vol. 48, no. 11, pp. 649–661.
3. Kino, G.S., Acoustic Waves: Devices, Imaging, and Analog Signal Processing, Prentice Hall, 1987.
4. Spravochnik po spetsial’nym funktsiyam (Handbook of Special Functions), Abramovits, M. and Stigan, I., Eds., Moscow: Nauka, 1979.
5. Vainshtein, L.A. and Vakman, D.E., Razdelenie chastot v teorii kolebanii i voln (Separation of Frequencies in the Theory of Vibrations and Waves), Moscow: Nauka, 1983.