1. The phonetic basis of perceptual ratings of running speech;Boves,1984
2. Clinical measurements of speech and voice;Baken,1987
3. Vocal vibrato as a function of frequency and intensity;Michel,1981
4. Variability in vibrato rate: extent and regularity;Shipp,1981
5. Contribution of the cricothyroid muscle to vocal vibrato;Shipp,1980