1. Bass, R.
(1958), “Diffraction effects in the ultrasonic field of a piston source”, Journal of the Acoustical Society of America, Vol. 30 No. 2, pp. 602-605.
2. Beissner, K.
(1981), “Exact integral expression for the diffraction loss of a circular piston source”, Acoustica, Vol. 19 No. 3, pp. 212-217.
3. Beissner, K.
(1987), “Radiation force calculations”, Acustica, Vol. 62 No. 4, pp. 255-263.
4. Beissner, K.
(2010), “Report on the CIPM key comparison CCAUV.U-K1 (Ultrasonic Power)”, available at: www.bipm.org/utils/common/pdf/final_reports/AUV/U-K1/CCAUV.U-K1.pdf
5. Bobber, R.J.
(1966), “General reciprocity parameter”, Journal of the Acoustical Society of America, Vol. 39 No. 4, pp. 680-687.