1. Sound transmission through rectangular slots of finite depth between reverberant rooms;Sauter;J Acoust Soc Am,1970
2. The “sound insulation” of circular and slit shaped apertures;Gromperts;Acustica,1964
3. The sound transmission loss of circular and slit-shaped apertures in walls;Gromperts;Acustica,1967
4. The acoustic sealing of holes and slits in walls;Mechel;J Sound Vibr,1986
5. Theoretical acoustics;Morse,1986