1. A videoendoscopic and computerized tomographic study of hypopharyngeal and supraglottic activity during assorted vocal tasks;Pershall,1985
2. Investigation of selected voice therapy techniques;Casper,1990
3. Is your voice telling on you?;Boone,1991
4. Modifying vocal behavior;Moncur,1974
5. Voice problems of children;Wilson,1979