1. By-pass engine noise;Greatrex;Transactions of the Society of Automotive Engineers,1961
2. Sonic block silencing for axial and screw-type compressor;Sobel;Noise Control,1961
3. A wave-envelope analysis of sound propagation in nonuniform circular ducts with compressible mean flows;Nayfeh;NASA CR-3109,1979
4. Transmission of sound through nonuniform circular ducts with compressible mean flows;Nayfeh;American Institute of Aeronautics and Astronautics Journal,1980
5. Nonlinear propagation in near sonic flows;Nayfeh;American Institute of Aeronautics and Astronautics Paper 80-0096,1980