1. Barth, A.D., Oko, R.J., 1989. Abnormal Morphology of Bovine Spermatozoa. Iowa State Univ. Press, Ames, IA, pp. 16–17.
2. Estimating fertility potential via semen analysis data;Bartoov;Hum. Reprod.,1993
3. Light microscopy characterization of sperm morphology;Bonet;Microsc. Anal.,1995
4. Aportación al conocimiento de la criptorquidia espontánea abdominal y unilateral en porcino: análisis microscópico del eyaculado;Bonet;Rev. Assoc. Nac. Porcinocult. Cient.,1998
5. Sperm malformations throughout the boar epididymal duct;Briz;Anim. Reprod. Sci.,1996