References
- Chaffin D B. Human strength capability and low back pain. Journal of Occupational Medicine 1974; 16: 248–254
- Cyriax J A. Textbook of Orthopaedic Medicine. Balliere Tindall—Cassell Ltd, London 1979; Vol. 1, Ed. 7
- Dixon A St C. Progress and problems in back pain research. Rheumatology and Rehabilitation 1973; 12: 165–169
- Fahrni W. Conservative treatment of lumbar disc degeneration; our primary responsibility. Orthopedics Clinics of North America 1975; 6: 93–103
- Friberg S, Hirsch C. Anatomical and clinical studies on lumbar disc degeneration 1950. Acta Orthopaedica Scandinavica, 19: 222–242
- Horal J. The clinical appearance of low back disorder in the city of Gothenburg; Sweden. Acta Orthopaedica Scandinavica 1969, Supplement 118
- Hult L. The Munkfors investigation. Acta Orthopaedica Scandinavica 1954, Supplement 16
- Kelsey J. The impact of musculoskeletal disorders on the population of the United States. Journal of Bone & Joint Surgery (American) 1979; 61: 939–954
- McKenzie R. The Lumbar Spine, Wright, Carmen. Upper Hult, New Zealand 1981, Ltd (Eds)
- Magora A. Investigation of relation between low back pain and occupation. 1. Age, Sex, Community education and other factors. Indian Journal of Medical Surgery 1970; 39: 461–471
- Morbidity Statistics for General Practice :2nd National Study 1970–71. Population Census and Surveys 1974 Her Majesty's Stationery Office, London
- Nachemson A. Towards a better understanding of low back pain: a review of the mechanics of the lumbar spine. Rheumatol Rehabil. 1975; 14: 129–149
- Ponte D J, Jensen G J, Kent B E. A preliminary report of the use of the McKenzie protocol versus Williams protocol in the treatment of low back pain. J. Orthop & Sports Phys. Ther. Sept/Oct, 1984; 130–139
- Report of the Arthritis and Rheumatism Council; Industrial Unit 1969. Her Majesty's Stationery Office, London
- Scott J, Huskisson E. Graphic representation of pain 1976; 2: 175–184
- Shah J, Hampson W, Jayson M. The distribution of surface strain in the cadaveric lumbar spine. Journal of Bone & Joint Surgery (Br) 1978; 60: 246–251
- Williams P. Examination and conservative treatment for disc lesions of the lower spine. Clinical Orthopedics 1955; 5: 28–40
- Williams P. The Lumbosacral Spine. McGraw-Hill, New York 1965
- Williams P. Low Back and Neck Pain: Causes and Conservative Treatment 1974 3, C. Charles Thomas. Springfield. 1979
- Zylbergold R, Piper M. Lumbar disc disease: comparative analysis of physical therapy treatments. Archives of Physical Medicine 1981; 62: 176–179