1. Die inneren männlichen Geschlechtsorgane;Oberndorfer,1931
2. Die Spermainvasion;Orsos;Virchows arch. f. path. Anat.,1941
3. Sperm invasion of the epididymis;Steinberg;J. Urol.,1947
4. A study of the function of the epididymis;Simeone;J. Exp. Biol.,1930
5. Spermatozoa in urine;Wilhelm;Am. J. Surg.,1937