
L. E. Baum and T. Petrie, "Statistical inference for probabilistic functions
of finte state Markov chains," Annls of Mathematical Statistics ,
37:15541563, 1966.

L. E. Baum, T. Petrie, G. Soules, and N. Weiss, "A maximization technique
occurring in the statistical analysis of probabilistic functions of Markov
chains," Annals of Mathematical Statistics , 41(1):164171, 1970.

S. Young, J. Jansen, J. Odell, D. Ollason, and P. Woodland, HTK  Hidden
Markov Model Toolkit, Cambridge University, 1995.

J. Li, A. Najmi, R. M. Gray, ``Image classification by a two dimensional
hidden Markov model,'' IEEE Transactions on Signal Processing ,
48(2):51733, February 2000. [2D HMM]
(download)

J. Li, R. M. Gray, R. A. Olshen, ``Multiresolution image classification by
hierarchical modeling with two dimensional hidden Markov models,'' IEEE
Transactions on Information Theory , 46(5):182641, August 2000. [2D
MHMM]
(download)

J. Li, W. Miller, ``Significance of interspecies matches when evolutionary
rate varies,'' Journal of Computational Biology , 10(34):537554,
2003. [HMMMO]
(download)

J. Li, J. Z. Wang, ``Studying digital imagery of ancient paintings by
mixtures of stochastic models,'' IEEE Transactions on Image Processing,
12(3):340353, 2004. [Mixture of 2D MHMMs]
(download)
