SAFDAR, AMIR HOSSEIN ASGARI, et al. “Effect of Using Supplementation Mineral or Organic Selenium With Vitamin E As Antioxidants in the Flushing Diet on the Fertility of Ewes”. The Indian Journal of Animal Sciences, vol. 90, no. 8, Jan. 2021, pp. 1151-4, https://doi.org/10.56093/ijans.v90i8.109297.