1. Embleton, T. F.: Experimental study of noise reduction in centrifugal blowers. The Journal of the Acoustical Society of America 35, 700–705 (1963)
2. Guedel, A.: Bruit des ventilateurs–Partie 2 (Fan noise–Part 2) Technical engineering BM4178 23p (2002)
3. Ffowcs Williams, J. E., Hawkings, D. L.: Sound generation by turbulence and surfaces in arbitrary motion. Proceedings of the Royal Society of London, 264, 21–342 (1969)
4. Lumley, J. L.: The structure of inhomogeneous turbulent flows in atmospheric turbulence and radio wave propagation. In proceeding international colloque. Publisher House NAUK, Moscow, june 15–22, 166–177 (1967)
5. Borgiotti, G. V.: The power radiated by a vibrating body in an acoustic field and its determination from boundary measurements. Journal of the Acoustical Society of America. 88, 1884–1893 (1990)