1. Une etude sur la protection des habitations contre les bruite exterieurs penetrant par les facades;Gilbert;Cahiers du C.S.T.B. (Paris) No. 103 Cahier 901,1969
2. Gallery houses with respect to traffic noise;Gustafsson,1973
3. Courtyard acoustics;Ettouney;Applied Acoustics,1973
4. Traffic noise reduction due to the screening effect of balconies on a building facade;Mohsen;Applied Acoustics,1977
5. The acoustical performance of courtyard houses with respect to noise from road traffic;Oldham;University of Sheffield Department of Building Science Internal Report BS 41,1978