1. Orofacial Pains—Differential Diagnosis;Bell,1979
2. Orofacial Pains — Differential Diagnosis;Bell,1973
3. Visual analog scales;Huskisson,1983
4. Differential diagnosis and treatment of oral and perioral pain;Ingle,1985
5. Observations on referred pain arising from muscle;Kellgren;Clin. Sci.,1938