1. Observations on referred pain arising from muscle;Kellgren;Clin Sci,1938
2. Experiments on pain referred from deep somatic tissues;Feinstein;J Bone Surg,1954
3. Myofascial pain and dysfunction,1998
4. Referred muscle pain: basic and clinical findings;Arendt-Nielsen;Clin J Pain,2001
5. Pathophysiology of pain;Ruch,1965