1. Fan Compressor Noise Reduction
2. Smith, E.B., Benzakein,M.J., and Radecki, K. "Study and Tests to Reduce Compressor Sounds of Jet Aircraft, "FAA Report DS-68-7.
3. Chesnutt, D. "Noise Reduction by Means of Inlet Guide Vane Choking in an Axial Flow Compressor, "NASA TN D-4682, July 1968.