1. Kellgren JH: Observations on referred pain arising from muscle. Clin Sci 1938, 3:175–190.
2. Mense S, Simons DG: Muscle Pain: Understanding Its Nature, Diagnosis, and Treatment. Philadelphia: Lippincott Williams & Wilkins; 2001. This book gives a comprehensive review of muscle pain and links data from basic animal studies with clinical manifestations of muscle pain.
3. Mense S: Nociception from skeletal muscle in relation to clinical muscle pain. Pain 1993, 54:241–289.
4. Sessle BJ, Hu JW, Yu XM: Brain stem mechanisms of referred pain and hyperalgesia in the orofascial and temporomandibular region. In New Trends in Referred Pain and Hyperalgesia. Edited by Vecchiet L, Albe-Fessard D, Lindblom U, Giamberardino MA. Amsterdam: Elsevier Science Publishers BV; 1993:59–71.
5. Marchettini P, Simone DA, Caputi G, Ochoa JL: Pain from excitation of identified muscle nociceptors in humans. Brain Res 1996, 740:109–116.