15. Callaghan, E.E., et al., ‘‘Near Noise Field of a Jet-Engine Exhaust. II — Cross Corre- 
lation of Sound Pressures,’’ National Advisory Committee for Aeronautics TN 3764 (Sep 1956). 
16. Wolfe, M.O.W., ‘‘The Structural Aspects of Jet Noise,’’ The Journal of the Royal Aero- 
nautical Society, Vol. 61, No. 554 (Feb 1957). 
17. Wolfe, M.O.W., ‘‘Near Field Jet Noise,’’ Advisory Group for Aeronautical Research and 
Development Report 112 (Apr-May 1957). 
18. Jorgensen, D.W., ‘‘Measurements of Noise from Cavitating Submerged Water Jets,”’ 
David Taylor Model Basin Report 1126 (Nov 1958). 
19. Hubbard, H.H., ‘‘A Survey of the Aircraft-Noise Problem with Special Reference to Its 
Physical Aspects,’’ National Advisory Committee for Aeronautics TN 2701 (May 1952). 
20. Goldstein, S. (edited by), ‘‘Modern Developments in Fluid Dynamics,’’ Vol. I, Oxford 
University Press (1938), p. 191. 
21. Batchelor, G.K., ‘‘Homogeneous Turbulence,’’ Cambridge University Press (1953), 
p. 79. 
22. von Karman, T. and Howarth, L., ‘‘On the Statistical Theory of Isotropic Turbulence,”’ 
Proceedings of the Royal Society, Series A, Vol. 164 (1938), pp. 192-215. 
23. Batchelor, G.K., ‘‘Pressure Fluctuations in Isotropic Turbulence,’’ Proceedings of 
the Cambridge Philosophical Society, Vol. 47 (1951), pp. 359-374. 
24. Lighthill, M.J., ‘‘Notes Relevant to Any Investigation of Noise from Turbulent Bound- 
ary Layers, and the Effect of Compressibility on Turbulence,’’ Fluid Motion Sub-Committee, 
Aeronautical Research Council (Great Britain), F.M. 2063 (16,741) (28 Apr 1954). 
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