A study on respiratory and glottal controls in six western singing qualities: airflow and intensity measurement of professional singing. - Jo Estill; Noriko Kobayashi; Kiyoshi Honda; Yuki Kakita (ICSLP, 1990)

F0 and formant frequency distribution of dysarthric speech - a comparative study. - Hiroki Mori; Yasunori Kobayashi; Hideki Kasuya; Hajime Hirose; Noriko Kobayashi (INTERSPEECH, 2004)