1. Bland JH, Boushey DR (1990) Anatomy and physiology of the cervical spine. Semin Arthritis Rheum 20:1–20
2. McGil S (2007) Low back disorders: evidenced-based prevention and rehabilitation. Human Kinetics. [Online]. Available:
http://books.google.com.mx/books?id=j0R4-fzBwPIC
3. White AA, Panjabi MM (1978) Clinical biomechanics of the spine. Lippincott. [Online]. Available:
http://books.google.com.mx/books?id=U5NsAAAAMAAJ
4. Eisenberg MG (1995) Dictionary of rehabilitation. Springer Publishing Company
5. Bergmark A (1989) Stability of the lumbar spine. Acta Orthopedica Scandinavica 230:1–54