1. Final report of the Wilson Committee on noise;Wilson;H.M. Stationery Office, London, Command No. 2056,1963
2. Methods of measurement of noise emitted by motor vehicles;International Standards Organization;ISO Recommendation R362, Geneva,1966
3. Noise levels near motorways in non-built up areas;Lamure;Cahier du Scientifique et Technique du Batiment, Paris, No. 71, Cahier 569,1964
4. Noise levels near motorways in non-built up areas;Lamure;Building Research Station, Watford, Translation Library Communication No. 1315,1965
5. The evaluation of noise from freely flowing traffic;Johnson;Journal of Sound and Vibration,1968