1. Noise Control in Mechanical Services;Webb,1972
2. Theory of sound trasmission through cylindrical shells;Cremer;Acustica,1955
3. Experimental investigation of sound transmission through cylinders;Heckl;Acustica,1958
4. Transmission through duct walls of internally-propagated sound;Morfey,1971
5. Sound radiation from pipes excited by plane acoustic waves;Brown,1974