1. Statistical analysis from a sound level meter;Scholes;Applied Acoustics,1973
2. Traffic noise sampler;Anon,1976
3. Calculation of road traffic noise;Anon,1975
4. The Traffic Noise Index: A method of controlling noise nuisance;Langdon;Building Research Station Current Paper 36/68,1968
5. The concept of noise pollution level;Robinson;NPL Aero Report Ac 38,1969