1. Technique of spinal fusion: pseudarthrosis and method of repair;Bosworth,1948
2. Lumbo-sacral fusion results with early ambulation;Bragg;Surg. Gynec. Obstet.,1956
3. Surgery of the lumbar spine;DePalma;Clin. Orthop.,1969
4. The Intervertebral Disc;DePalma,1970
5. The nature of pseudarthrosis;DePalma;Clin. Orthop.,1968