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2. The motility of ram and bull spermatozoa in dilute suspension;Blackshaw;J. Gen. Physiol.,1953
3. Bosc, D., Retaillaud, F., Stradaioli, G., Giubini, C., Magistrini, M., 2002. Influence of temperature and extender on sperm motility and peroxidation process in the stallion. Proceedings of the Ninth International Symposium on Spermatology. Capetown, October 6–11th, P2-01, p. 59.
4. Production of reactive oxygen species by spermatozoa undergoing cooling, freezing and thawing;Chatterjee;Mol. Reprod. Dev.,2001
5. Modelling binary data;Collett,1991