1. Aeroacoustics of Flight Vehicles: Theory and Practice;Hubbard H. H.,1995
2. Aeroacoustics of Flight Vehicles: Theory and Practice;Hubbard H. H.,1995
3. Core noise from gas turbine exhausts
4. R. N. Kumar, inAeroacoustics: Jet Noise, Combustion and Core Engine Noise, Progress in Astronautics and Aeronautics Vol. 43, edited by I. R. Schwartz (AIAA, New York, 1976), pp. 483–507.