1. Hülse M. Die fuktionelle Dysfonie nach Halswirbeltrauma. Laryngo-Rhino-Otol, 1991; 70: 599–603
2. Halama AR. Clinical approach to the dyphagic patient. Acta Otorhinolaryngol. Belg., 1994; 48: 119–126
3. Nansel D, Szlazak M. Somatic dysfunction and the phenomenon of visceral disease simulation: a probable explanation for the apparent effectiveness of somatic therapy in patients presumed to be suffering from true visceral disease. J. Manipul Physiol Ther., 1995; 18: 379–97
4. Lewit K. Manipulative therapy in rehabilitation of the locomotor system 3rd ed. Butterworth-Heineman, 1999; p. 270
5. Hülse M. Zervikale Dysphonie. Folia Phoniatr., 1991; 18: 181–196