1. Clarke, J.P and Hansman, R. J. "Systems Analysis of Noise Abatement Approach Procedures Enabled by Advanced Flight Guidance Techniques," 35th AIAA Aerospace Sciences Meeting, Reno, Nevada, January 1997, AIAA-97-0490.
2. Tobias, L. and Rippy, L. Quiet aircraft technology, community noise impact, low noise airspace operations. QAT Workshop III, NASA Ames Research Center, Moffet Field, CA. October5,2000.
3. National Aerospace Laboratory NLR. Sourdine project PL97-3043 final report. Amsterdam, Netherlands. February21, 2001
4. Air Line Pilot's Association. ALPA administrative manual, section 80. Noise abatement. Herndon, VA. November, 1999.