1. A case of supernumerary testis;Lane;Tr. Clin. Soc. London,1895
2. Un Raro Caso Di Triorchismo;Mariotti;Gass d. osp.,1907
3. Testicules Surnumeraires a Propos D’une Observation de Troisieme Testicule Histologiquement en Activite;Jeannin;Bull. & Mem. de la Soc. Anat.,1923
4. An anatomical analysis of an example of polyorchidism;King;J. Anat.,1930
5. Polyorchidism;Boggon;Brit. J. Surg.,1932