REFERENCES
- Scott, R. A., “The acoustic impedance of sound absorbing materials”, Proc. Phys. Soc., 58 (1946), 254.
- Morse, P. M. & Bolt, R. H., “Sound waves in rooms”, Rev. Mod. Phys., 16 (1944), 90, 140.
- Bolt, R. H., “Perforated facings for acoustic materials”, J.A.S.A., 19 (1947), 918