1. Spastiche Form der nervosen Helserkeit;Traube,1871
2. Clinical voice disorders: An interdisciplinary approach;Aronson,1990
3. Neuro-psychiatric aspects of spastic dysphonia;Bloch;Folia Phoniatr,1965
4. Spastic dysphonia;Izdebski,1981
5. Neuropathology of spasmodic dysphonia;Schaefer;Laryngoscope,1983