1. ISO 140-4: 1998, Acoustics - Measurement of sound insulation in buildings and of building elements, Part 4: Field measurements of airborne sound insulation between rooms.
2. ISO 140-7:1998, Acoustics - Measurement of sound insulation in buildings and of building elements, Part 7: Field measurements of impact sound insulation of floors.
3. ISO 140-14:2004, Acoustics - Measurement of sound insulation in buildings and of building elements, Part 14: Guidelines for special situations in the field.
4. ISO 140-5: 2000, Acoustics - Measurement of sound insulation in buildings and of building elements, Part 5: Field measurements of airborne sound insulation of façade elements and façades.
5. EN 12354-3: 2002, Building acoustics - Estimation of acoustic performance of buildings from the performance of elements, Part 3: Airborne sound insulation against outdoor sound.