1. Rupture of the intervertebral disc with involvement of the spinal canal;Mixter;N Engl J Med,1934
2. Removal of protruded intervertebral disc without laminectomy;Love;Proc Staff Meet Mayo Clin,1939
3. Diagnosis of ruptured intervertebral disc without contrast myelography and comment upon recent experience with modified hemilaminectomy for their removal;Semmes;Yale J Biol Med,1939
4. Enzyme dissolution of the nucleus pulposus in humans;Smith;J Am Med Assoc,1964
5. A new surgical procedure for lumbar disc herniation causing less tissue damage through a microsurgical approach;Caspar;Adv Neurosurg,1977