1. London Noise Survey,1968
2. Subjective response to road traffic noise, BRS CP 37/68;Griffiths;J. Sound Vib.,1968
3. The Traffic Noise Index: a method of controlling noise nuisance, BRS CP 38/68;Langdon;Architects' J.,1968
4. Disturbance from traffic noise in residential areas;Anon;Build International,1968
5. Trafikbuller i Bostadomraden,1968