1. The horizontal propagation of sound from a jet engine close to the ground at Radlett;Parkin;Journal of Sound and Vibration,1964
2. The horizontal propagation of sound from a jet engine close to the ground at Hatfield;Parkin;Journal of Sound and Vibration,1965
3. Prediction of traffic noise levels;Delany;National Physical Laboratory Acoustics Report, Ac 56,1972
4. A computer model for determining the temporal distribution of noise from road traffic;Nelson;Department of the Environment, Transport and Road Research Laboratory Report LR 611,1973
5. A note on the objective measurement of road traffic noise;Scholes;Applied Acoustics,1969