Facial Pain
The Neurologist 15:171-177, Graff-Radford,S.B., 2009
Hemifacial Spasm:Clinical Findings and Treatment
Muscle & Nerve 21:1740-1747, Wang,A & Jankovic,J, 1998
Causalgia and Other Reflex Sympathetic Dystrophies
In the Management of Pain, Lea & Febiger, Phila, p. 220, Bonica,J.J., 1990