1. L.M.B.C. Campos, J.M.G.S. Oliveira, J. Acoust. Soc. Am. 116, 3336 (2004)
2. Encyclopedia of Acoustics, Chapter 8: Davies P.O.A.L. Waveguides, edited by M.J. Crocker, Vol. 1 (J. Wiley & Sons, 1997), p. 91
3. A. Snakowska, R. Wyrzykowski, Arch. Acoust. 11, 261 (1986)
4. E.J. Rice, AIAA 5th Aero-acoustics Conference (Seattle, 1979)
5. A.D. Rawlins, Proc. R. Soc. London A 361, 65 (1978)