1. Alaranta H (1985) Factors defining impairment, disability and handicap in a population of patients examined one year following surgery for lumbar disc herniation. Thesis, University of Turku, Finland
2. Fairbank JCT, Couper J, Davies JB, O'Brien JP (1980) The Oswestry low back pain disability questionnaire. Physiotherapy 66:271–273
3. Fast A, Robin GC, Floman Y (1985) Surgical treatment of lumbar spinal stenosis in the elderly. Arch Phys Med Rehabil 66:149–151
4. Garfin SR, Glover M, Booth RE, Simeone FA, Rothman RH (1988) Laminectomy: a review of the Pennsylvania Hospital experience. J Spinal Disorders 1:116–133
5. Getty CJM (1980) Lumbar spinal stenosis. Clinical spectrum and the results of operation. J Bone Joint Surg [Br] 62:481–485