1. Understanding voice problems: a physiological perspective for diagnosis and treatment;Colton,1990
2. The spectrum of vocal dysfunction;Koufman;Otolaryngol Clin North Am,1991
3. The voice and voice therapy;Boone,1988
4. Clinical voice disorders;Aronson,1990
5. Vocal fatigue;Sander;Ann Otol Rhinol Laryngol,1983