1. A tutorial on hidden Markov models and selected applications in speech recognition;Rabiner,1989
2. A speaker-independent, syntax-directed, connected word recognition system based on hidden Markov models and level building;Rabiner;IEEE Trans. Acoust. Speech Signal Process. ASSP-33,1985
3. Connected and degraded text recognition using a hidden Markov model;Bose,1992
4. Connected and degraded text recognition using planar hidden Markov models;Agazzi,1993
5. Keyword spotting in poorly printed texts using pseudo 2D hidden Markov models;Kuo,1993