1. Rabiner, L.R.: A tutorial on hidden Markov models and selected applications in speech recognition. Proc. IEEE 77, 257–286 (1989)
2. Young, S., Evermann, G., Kershaw, D., Moore, G., Odell, J., Ollason, D., Povey, D., Valtchev, V., Woodlands, P.: The HTK Book for HTK Version 3.2. Cambridge University Engineering Department, Cambridge, UK (2002)
3. Garofolo, J.S., Lamel, L.F., Fisher, W.M., Fiscus, J.G., Pallett, D.S., Dahlgren, N.L.: DRAPA TIMIT acoustic-phonetic continuous speech corpus CD-ROM. NISTIR 4930 (1992)
4. Duda, R.O., Hart, P.E., Stork, D.G.: Pattern Classification, 2nd edn. Wiley, New York (2001)
5. Golowich, S.E., Sun, D.X.: A support vector/hidden Markov model approach to phoneme recognition. ASA Proceedings of the Statistical Computing Section pp. 125–130 (1998)