1. Mechanical Sound, Technology, Culture and Public Problems of Noise in the Twentieth Century;Bijsterveld,2008
2. Exposure of the Australian population to road traffic noise;Brown;Applied Acoustics,1994
3. Galloway W, Eldred K, and Simpson M (1974) Population distribution of the United States as a function of outdoor noise. US Environmental Protection Agency Report No. 550/9-74-009. Washington, DC: US EPA.
4. Gjestland T (2008) Background noise levels in Europe. Sintef ICT Report No. A6631 (in assignment of the European Aviation Safety Agency). Trondheim, Norway.
5. Hooghwerff J, Blokland GJ van, and Roovers M (1998) Road traffic noise in EU-15. Paper summarizing the results of a study for the European Environment Agency, under the title “Present state and future trends on transport noise in Europe.”