1. Proceedings of the 3rd International Acoustics;Westervelt,1970
2. A useful analytical model for the parametric acoustic array;Bartram;Journal of the Acoustical Society of America,1972
3. Status and future of nonlinear acoustics;Westervelt;Journal of the Acoustical Society of America,1975
4. Nonlinear attenuation and the parametric array;Bartram;Journal of the Acoustical Society of America,1975
5. Nonlinear Acoustics;Beyer,1974