1. Measurements of the vibrato rate of ten singers;Prame;J Acoust Soc Am,1994
2. Comparative measures of vocal tremor and vocal vibrato;Ramig;J Voice,1987
3. Dependence of the vibrato on pitch, musical intensity, and vowel in different voice classes;Seidner,1995
4. Some acoustic characteristics of vocal vibrato;Shipp;J Res Sing,1980
5. Acoustic and psychoacoustic aspects of vocal vibrato;Sundberg,1995