1. V. F. K. Bjerknes, Field of Force (Columbia Univ. Press, New York, 1906).
2. R. Mettin, I. Akhatov, U. Parlitz, C. D. Ohl, and W. Lauterborn, ‘‘Bjerknes force between small cavitation bubbles in a strong acoustic field,’’ Phys. Rev. E 56, 2924–2931 (1997).
3. B. Kieser, R. Phillion, S. Smith, and T. McCartney ‘‘The application of industrial scale ultrasonic cleaning to heat exchangers,’’ in Proceedings of International Conference on Heat Exchanger Fouling and Cleaning (2011), pp. 336–366.
4. K. S. Suslick, ‘‘Sonochemistry,’’ Science (Washington, DC, U. S.) 247 (4949), 1439–1445 (1990).
5. D. L. Miller and J. Quddus, ‘‘Diagnostic ultrasound activation of contrast agent gas bodies induces capillary rupture in mice,’’ Proc. Natl. Acad. Sci. U. S. A. 97, 10179–10184 (2000).