1. M.A. Alvarenga, K.M. Leao, F.O. Papa, F.C. Landim-Alvarenga, A.S.L. Medeiros, G.M. Gomes, The use of alternative cryoprotectors for freezing stallion semen, Proceedings of a Workshop on Transporting Gametes and Embryos, Havemeyer Foundation 12 (2003) 74–6.
2. Amides as cryoprotectants for freezing stallion semen: a review;Alvarenga;Anim. Reprod. Sci.,2005
3. Principles of cryopreservation and a review of cryopreservation of stallion spermatozoa;Amann;J. Equine Vet. Sci.,1987
4. Pregnancy in a mare resulted from frozen epididymal spermatozoa;Barker;Can. J. Comp. Med.,1957
5. Manual of Equine Reproduction;Brinsko,2011