1. Byrce TN, Ragnarsson KT. Pain management in persons with spinal cord disorders. En: Lin V.W., Cardenas D.D., Frost F., Cutter N.C., Waters R., editores. Spinal Cord Medicine. Principles and Practice. New York: Ed. Demos Medical Publishing; 2003. p. 441–61
2. Studies upon spinal cord injuries. II The nature and treatment of pain;Davis;J Neurosurg,1947
3. Pain in paraplegia. Clinical management and surgical treatment;Botterell;Proc Roy Soc Med,1953
4. Pain in patients with spinal cord injury;Richards;Arch Phys Med Rehabil,1979
5. Pain in paraplegia;Burke;Paraplegia,1973