1. Primary carcinoma of scrotum; report of case;Alcorn;J. Mich. Med. Soc.,1941
2. Bessius: Cited by Graves and Flo.
3. Bock and Dreifuss: Cited by Southam and Wilson.
4. Mule-spinners cancer;Brockbank;Brit. Med. J.,1941
5. Cancer scroti;Chase;Rhode Island Med. J.,1942