1. ISO 717-1. Acoustics-rating the sound insulation in buildings and of building elements. Part 1. Airborne sound insulation; 1996.
2. ISO 140-4. Acoustics-measurement of sound insulation in buildings and of building elements. Part 4. Field measurements of airborne sound insulation between rooms; 1998.
3. Olesen H. Technical Report ISO/TR 140-13. Measurement of sound insulation in buildings and of building elements. Part 13. Guidelines; 1997.
4. Measurement of the low-frequency sound insulation of building components;Pedersen;Acustica,2000
5. ISO 15186-3. Acoustics–Measurement of sound insulation in buildings and of building elements using sound intensity. Part 3. Laboratory measurements at low frequencies; 2002.