1. The anechoic chamber at the Technical University of Denmark;Ingerslev;Brüel & Kjaer Technical Review,1968
2. Design and construction of an anechoic chamber at the National Physical Laboratory of India;Panchouly;Applied Acoustics,1981
3. New Anechoic Chamber at the Environmental Acoustics Laboratory in Kobe University;Maekawa;Memories of the Faculty of Engineering, Kobe University No. 27,1981
4. New rooms for acoustic measurements at the Danish Technical University;Ingerslev;Acustica,1967
5. The design of a new free-field sound measurement room: specification and performance;Gilford;BBC Engineering Div. Research Report No. L-060,1965