1. Surgical management of precoccygeal cysts;Spencer;Surg. Gynec. & Obst.,1962
2. Retrorectal tumors;Jackman;J.A.M.A.,1951
3. The Surgery of Infancy and Childhood;Gross,1961
4. Pediatric Surgery;Swenson,1958
5. Idiopathic retroperitoneal fibrosis;Oramond;J.A.M.A.,1960