1. Uber einige messungen zur schallabsorption von publikum (On the measurements of sound absorption of audiences);Meyer;Acustica,1964
2. Messungen zur schallabsorption von personen auf ungepolsterten stuhlen (Measurements of sound absorption of audience on unupholstered seats);Kath;Acustica,1964
3. Der einfluss der bekleidung auf die schallabsorption von einzelpersonen (The influence of clothes on the sound absorption of single persons);Kath;Acustica,1966
4. The sound absorption of an audience on unupholstered seats;Hegvold;Appl Acoust,1971
5. ISO 354, Acoustics – measurement of sound absorption in a reverberation room, Geneva; 2003.