1. Diagnosis of Undescended Testes (Correspondence);BUNCE, P.L.;Pediatrics,1961
2. The Diagnosis of Undescended Testicle, Brit;BROWNE, D., (1938;med. J
3. Cryptorchism;CHARNY, C.W.; WOLGIN, W.,1957
4. JOHNSTON, J. H. (1965): Review Article. The Undescended Testis, Arch. Dis. Childh., 40, 113.
5. MINOR, C. L. 1(1959): The Empty Scrotum, Pediat. Clin. N. Amer., 6, 1137.