1. Acoustic wave radiated by head-on collision of two vortex;Kambe,1983
2. On vortex sound at low Mach number;Möhring;Journal of Fluid Mechanics,1978
3. Hydrodynamic noise;Ffowcs Williams;Annual Review of Fluid Mechanics,1969
4. On sound generated aerodynamically. I. General theory;Lighthill,1952
5. Theory of vortex sound;Powell;Journal of the Acoustical Society of America,1964