1. The incidence of ectopia vesicae;Rickham,1961
2. Exstrophy of the bladder: report of 158 cases;Higgins;Am Surg,1962
3. Pediatric Surgery;Chisholm,1979
4. The Surgery of Infancy and Childhood;Gross,1953
5. Exstrophy closure. A followup on 70 cases;Lattimer;J Urol,1966