1. ISO 10302, Acoustics – method for the measurement of airborne noise emitted by small air-moving devices. International organization for standardization, Geneva, Switzerland.
2. ISO 3745, Acoustics – determination of Sound power levels of noise sources – precision methods for anechoic and semi-anechoic rooms. International organization for standardization, Geneva, Switzerland.
3. Modelling of the noise spectra of axial low fans in a free field;Wu;J Sound Vib,1997
4. Characterizing computer cooling fan noise;Huang;J Acoust Soc Am,2003