1. ISO Recommendation 140/VII-1978(E). Field measurements of impact sound insulation of floors.
2. ISO Recommendation 717/2-1982(E). Rating of sound insulation in buildings and of building elements—Impact sound insulation.
3. Untersuchungen über den verlauf der sollkurve für den trittschallschutz im wohnungsbau;Fasold;Acustica,1965
4. Subjective judgments of footstep-noise transmission through fllors;Olynyk;Journal of the Acoustical Society of America,1965
5. Impact noise rating of various floors;Mariner;Journal of the Acoustical Society of America,1967