1. Electrical stimulation for reliefof pain;Miles, J.;AnnR CollSurgEngl,1984
2. Modification of blood flow to the extremities by electrical stimulation of the nervous system;Dooley, D.M.; Kasprak, M.;South MedJ,1976
3. Measurement of pain;Huskisson, E.C.;Lancet,1974
4. Epidural morphine for ischaemic rest pain;Lemberger, R.J.; Layfield, D.J.; Hopkinson, B.R.; Makin, G.S.;BrJ Surg,1981