1. Melzack R, Wall PD: Pain mechanisms: a new theory. Science 1965, 150:971–978.
2. Shealy C, Mortimer J, Reswick J: Electrical inhibition of pain by stimulation of the dorsal columns: preliminary clinical report. Anesth Analg 1967, 46:489–491.
3. North R, Roark G: Spinal cord stimulation for chronic pain. Neurosurg Clin North Am 1995, 1:145–155.
4. Foreman R, Chandler M, Brennan T, et al.: Does dorsal column stimulation reduce the activity of spinothalamic tract cells that respond to cardiac input? Circulation 1989, 80(suppl 2):552.
5. Hosobuchi Y: Treatment of ischemic pain by neurostimulation. In Advances in Pain Research and Therapy, vol 13. Edited by Lipton S et al. New York: Raven Press; 1990:223–226.