2J.E. Fowcs Williams, L.H. Hall. Aerodynamic sound generation by turbulent flow in the vicinity of a scattering half plane[J] ,J. Fluid Mech , 1970, 40; Part 4; 657-670
3D.E. Thompson. A method for characterizing aerodynamic sound sources in turbomachines[J], Journal of Sound and Vibration 1995,181 (3),369-389