2) Schwartz, L. and Chayes, C. M.: Facial Pain and Mandibular Dysfunction, p.27, W. B. Saunders Co., Philadelphia, 1968.
3) Berry, D. C. and Yemm, R.: Variations in skin temperature of the face in normal subjects and in patients with mandibular dysfunction, British Journal of Oral Surgery, 8: 242-247, 1971.