References
- Steinberg, J. C., Bell Syst. Tech. J., 9 (1930), 550.
- Tiffany, W. R., J. Speech & Hearing Disorders, 18 (1953), 289.
- Garvey, W. D. & Henneman, R. H., A.F. Tech. Rep. 5925, Dayton, Ohio.
- Gerstman, L. J., J. Acoust. Soc. Amer., 28(A) (1956). 160.
- Hughes, G. W. & Halle, M., J. Acoust. Soc. Amer., 28 (1956), 303.
- Fairbanks, G., Everitt, W. L. & Jaeger, R. P., Trans. I.R.E., P.G.A., A.U. 2 (1954), 7.