1. L.R. Bahl, P.F. Brown, P.V. de Souza, and R.L. Mercer. Maximum mutual information estimation of HMM parameters for speech recognition. In Proc. IEEE Intl. Conf. on Acoustics, Speech, and Signal Processing, 49–52, Tokyo, Japan, December 1986.
2. L.E. Baum and T. Petrie. Statistical inference for probabilistic functions of finite state Markov chains. Ann. Math. Statist., 37(6):1554–1563, 1966.
3. J. Bilmes. Buried markov models: A graphical modeling approach to automatic speech recognition. Comput. Speech Lang., 17:213–231, April–July 2003.
4. J. Bilmes and C. Bartels. Graphical model architectures for speech recognition. IEEE Signal Process. Mag., 22(5):89–100, September 2005.
5. J. A. Bilmes. Graphical models and automatic speech recognition. In R. Rosenfeld, M. Ostendorf, S. Khudanpur, and M. Johnson, editors, Mathematical Foundations of Speech and Language Processing. Springer-Verlag, New York, 2003.