1. ISO 717-2:1997, Acoustics—Rating of sound insulation in buildings and of building elements—Part 2: Impact sound isolation, Geneva, Switzerland, 1997.
2. ISO 717-1:1997, Acoustics—Rating of sound insulation in buildings and of building elements—Part 2: Airborne sound insulation, Geneva, Switzerland, 1997.
3. Sound insulation of double panels—comparison of existing prediction models;Hongisto;Acta Acustica United with Acustica,2006
4. Sound transmission through multiple structures containing flexible blankets;Beranek;The Journal of the Acoustical Society of America,1949
5. Transmission of reverberant sound through double walls;London;The Journal of the Acoustical Society of America,1950