1. Anderson, B.W. and Kalb, J.T. English verification of the STI method for estimating speech intelligibility of a communications channel. J. Acoust. Soc. Am. 81(6), (1987), 1982–1985.
2. Chollet, G.F., Gagnoulet, C., “On the Evaluation of recognizers and databases using a reference system”, IEEE Proc. ICASSP, Atlanta (1981).
3. French, N.R. and Steinberg, J.C., Factors governing the intelligibility of speech sounds. J. Acoust. Soc. Am. 19 (1947), 90.
4. Gillick, L. and Cox, S.J., Some statistical issues in the comparison of speech recognition algorithms, IEEE Proc. ICASSP, Glasgow (1989).
5. Goodman, D.J. and Nash, R.D., Subjective quality of the same speech transmission conditions in seven different countries, IEEE Trans Comm. 30 (1984) 642–654.