1. Relation of sexual behavior and ejaculation frequency to severity of vetebral body osteophytes in dairy and beef bulls;Almquist;J. Am. Vet. Med. Assoc.,1973
2. Spiral deviation of the bovine penis;Ashdown;Vet. Rec.,1967
3. Corpus cavernosum penis pressure and penile muscle activity in the bull during coitus;Beckett;Am. J. Vet. Res.,1974
4. Comparison of certain parameters of the penis and prepuce in various breeds of beef cattle;Bellenger;Res. Vet. Sei.,1971
5. Studies on the Social and Sexual Behavior of Bulls;Blockey,1975