1. Polyorchism;Wescott;J. Urol.,1967
2. Anomalies of the genital tract;Campbell,1963
3. Verdoppelung des Samensleiters;Windholz;Wien. klin. Wchnschr.,1929
4. Polyorchidism;Lane;Trans. Clinc. Soc. London,1895
5. Polyorchidism;Boggon;Brit. J. Surg.,1933