NTEMKA, A., TSAKMAKIDIS, I. A., KIOSSIS, E., MILOVANOVIĆ, A. y BOSCOS, C. M. (2018) «Current status and advances in ram semen cryopreservation», Journal of the Hellenic Veterinary Medical Society, 69(2), pp. 911–924. doi: 10.12681/jhvms.18014.