1. ISO/R 717: Rating of sound insulation for dwellings. International Standards Organization 1968.
2. Cremer L. Der Sinn der Sollkurven. In: Schallschutz von Bauteilen. Ernst u. Sohn, Berlin, Germany, 1961.
3. ISO 717–1: Acoustics – Rating of sound insulation in buildings and of building elements – Part 1: Airborne sound insulation. International Organization of Standardization, 1996.
4. ISO 16283–1: Acoustics – Field measurement of sound insulation in buildings and of building elements – Part 1: Airborne sound insulation. International Organization of Standardization, 2014.
5. Subjective and objective rating of airborne of sound insulation – Living sounds;Hongisto;Acta Acustica United Acustica,2014