1. Hill, C. R., ed. (1986). Physical principles of medical ultrasound. Ellis Horwood Ltd.
2. Osipov, L. V. (1999). Ultrazvukovyye diagnosticheskiye pribory: prakticheskoye rukovodstvo dlya polzovateley [Ultrasound diagnostic devices: a practical guide for users]. Moscow: Vidar Publ. (In Russian).
3. Prokic, M. (2004). Piezoelectric transducers modeling and characterization. MPI.
4. Ermolov, I. N. (1986). Ultrazvukovyye preobrazovateli dlya nerazrushayushchego kontrolya [Ultrasonic piezoelectric transducers for non-destructive testing]. Moscow: Mashinostroenie Publ. (In Russian).
5. Domarkas, V. I., Kazhis, R.-I. Yu. (1974). Kontrolno-izmeritelnye pezoelektricheskie preobra-zovateli [Verification and measurement piezoelectric transducers]. Vilnus: Mintis Publ. (In Russian).