1. Psychiatric symptomatology in functional dysphonia and aphonia;Aronson;Journal of Speech and Hearing Disorders,1966
2. XIII The Whispering Syndrome of Hysterical Dysphonia
3. Functional aphonia;Brodnitz;Annals of Otolaryngology,1969
4. Butcher, P. (1993) Psychological processes in functional voice disorder. 12th International Symposium on Respiratory Psychophysiology, 20-22 September, London
5. Cognitive-behavioural therapy with dysphonic patients: an exploratory investigation;Butcher;The College of Speech Therapists Bulletin,1983