Goldwait JE, Osgood RB: A consideration of the pelvic articulation from an anatomical, psthological and clinical standpoint. Boston Med Surg J 152: 593-601,1905
Hackett GS : Referred pain from low back ligament disability. AMA. Archives of Surgery 73: 878-883,1956
Mixter WJ, Barr JS : Rupture of the intervertebral disc with involvement of the spinal canal. N Eng J Med 211: 210-215,1934