1. Congenital Deformities of the Testis and Epididymis;Scorer,1971
2. Eine seltene angeborene Fehllagerung des Hodens;Von der Leyen;Chirurg,1963
3. The nature and cause of the physiological descent of the testes. Part I. Descent in marsupials;Hart;J. Anat. Physiol.,1909
4. On the origin and nature of hernia;Keith;Brit. J. Surg.,1924
5. Human Embryology and Morphology;Keith,1948