1. Report 550/9-74-004;United States of America Environmental Protection Agency,1974
2. Noise Units;Noise Advisory Council,1975
3. Assessment of community noise;Eldred;Journal of Sound and Vibration,1975
4. Commission of the European Communities Report EUR 5398e;Bastenier;Damage and annoyance caused by noise,1975
5. Investigation of the trade-off effects of aircraft noise and number;Rice;Journal of Sound and Vibration,1977