Isolated word recognition using hidden Markov models. - Kazuhide Sugawara; Masafumi Nishimura; Koichi Toshioka; Masaaki Okochi; Toyohisa Kaneko (ICASSP, 1985)

HMM-Based speech recognition using multi-dimensional multi-labeling. - Masafumi Nishimura; Koichi Toshioka (ICASSP, 1987)