1. Hubbard, H. H., editor,Aeroacoustics of Flight Vehicles: Theory and Practice: Volume1, NASA Reference Publication 1258, Vol 1, WRDC Technical Report 90-3052.
2. Heidelberg, L.J., Hall, D.G., Bridges, J.E., and Nallasamy, N. "A Unique Ducted Fan Test Bed for Active Noise Control and Aeroacoustics Research", NASA TM-107213, also AIAA-96-1740.
3. Sutliff, D.L., Nallasamy, N., and Elliott, D.M. "Baseline Acoustic Levels of the NASA Active Noise Control Fan Rig", NASA TM-107214, also AIAA-96-107214.