1. Speech analysis and synthesis by linear prediction of the speech wave;Atal;J. Acoust. Soc. Am,1971
2. Maximum mutual information estimation of hidden Markov model parameters for speech recognition;Bahl;Proceedings ICASSP 86,1986
3. An inequality and associated maximization technique in statistical estimation for probabilistic functions of Markov processes;Baum;Inequalities,1972
4. Issues in practical large vocabulary isolated word recognition: The IBM Tangora system;Das,1996
5. Automatic Recognition of Spoken Digits;Davis;J. Acoust. Soc. Am,1952