1. Spectral correlates of glottal voice source waveform characteristics;Gauffin;J Speech Hear Res,1989
2. Vocal frequency and vertical larynx positioning by singers and nonsingers;Shipp;J Acoust Soc Am,1975
3. Some phonatory characteristics of singers and nonsingers;Sundberg;Sp Trans Lab-Quart Progress Stat Report,1986
4. Physiological differences between singers and non-singers;Brown,1975
5. McGlone R. Lingual pressure variation during singing by trained and untrained individuals. Presented at the Fifth Symposium on Care of the Professional Voice, New York, June 1976.