Formant frequencies of vowels in English function words. - Noriko Umeda (ICSLP, 1992)

Usage of words and sentence structures in spontaneous versus text material. - Noriko Umeda; Karen Wallace; Josephine Horna (ICSLP, 1992)

A rhythm theory for spontaneous speech: the role of vowel amplitude in the rhythmic hierarchy. - Noriko Umeda; Toby Wedmore (ICSLP, 1994)