1. Intervertebral discolysis with collagenase;Sussman;J. Natl Med. Assoc.,1968
2. Experimental intervertebral discolysis with collagenase;Sussman;J. Neurosurg.,1969
3. Collagenase: an experimental study of intervertebral disc dissolution;Bromley;Spine,1980
4. Lumbar discolysis with collagenase;Gomez;Neurol. Colomb.,1981
5. Injection of collagenase in the treatment of herniated lumbar disk;Sussman;J. Am. Med. Assoc.,1981