1. Granit, R., 1955, A Discussion of Aims, Means and Results of Electrophysiological Research into the Process of Reception, in “Receptors and Sensory Perception,” Yale University Press, New Haven.
2. Hilton, J., 1892, in: “Rest and Pain,” W. H. A. Jacobson, ed., G. Bell and Sons, Ltd., London,
3. Melzack, R., 1981, Relation of Myofascial Trigger Points to Acupuncture and Mechanisms of Pain, Archives of Physical Medicine and Rehabilitation, 62: 114 - 117.
4. Mennell, J. M., 1952, ‘Rheumatic’ Symptoms Arising from the Cervical Spine and their Treatment, in: “Rheumatic Diseases: Postgraduate Medicine and Surgery,” American Rheumatism Association, N. B. Saunders Company, Philadelphia, p129.
5. Mennell, J. M., 1960, “Back Pain — Diagnosis and Treatment Using Manipulative Techniques,” Little, Brown and Company, Boston,