1. An apparatus for accurate measurement of the acoustic impedance of sound-absorbing materials;Scott;Proc. Phys. Soc.,1946
2. Acoustic Measurements;Beranek,1949
3. The practical representation of standing waves in an acoustic impedance tube;Lippert;Acustica,1953
4. The directivity and acoustic center of a probe microphone;Ando;J. Acoust. Soc. Japan,1968
5. The interference pattern method of measuring the complex reflection coefficient of acoustic materials at oblique incidence;Ando;Trans. Inst. Electron. Comm. Engrs. Japan,1968