1. Measurement of sound insulation with a sound level meter;Stephens;Applied Acoustics,1976
2. ASTM, Tentative recommended practice for determining a single number rating of airborne sound isolation in multi-unit building specifications, ASTM E 597-77T
3. Airborne isolation measurements by impulse techniques;Roland,1981
4. Airborne and impact noise level criteria for buildings;Fuchs;Applied Acoustics,1979
5. E.C. Sewell and W.E. Scholes, Sound insulation performance between dwellings built in the early 1970s. Current Paper 20/78, Building Research Station, Watford, WD2 7JR