Using hidden Markov models to define linguistic units. - R. Nag; S. C. Austin; Frank Fallside (ICASSP, 1986)

Frame compression in hidden Markov models. - S. C. Austin; Frank Fallside (ICASSP, 1988)

A unified syntax direction mechanism for automatic speech recognition systems using hidden Markov models. - S. C. Austin; Frank Fallside (ICASSP, 1989)