Metwaly, M. R. ., G. A. . Sosa, M. G. Abdel-Malak, and M. E.-R. Mohamed. “Protective Effects of Nano Zinc on Barki Ram Semen Viability”. Journal of Advanced Veterinary Research, vol. 13, no. 5, June 2023, pp. 743-52, https://advetresearch.com/index.php/AVR/article/view/1377.