1. Malov, V.V., P’ezoresonansnye datchiki (Piezoresonance Sensors), Moscow: Energoatomizdat, 1989.
2. Pulker, H.K., Benes, E., Hammer, D., and Solliner, E., Thin Solid Films, 1976, vol. 32, p. 27.
3. Barrett, P.N., and Pasternak, M., J. Appl. Phys., 1977, vol. 48, no.12, p. 5392.
4. Wallace, D.A., J. Spacecraft, 1980, vol. 17, no. 2, p. 153.
5. Radchenko, E.D., Plokhotnichenko, A.M., Sheina, G.G., and Blagoi, Yu. P., Biofizika, 1983, vol. 28, no. 4, p. 559.