Nadia, L., Radwan, et al. “Effect of Natural Antioxidant on Oxidative Stability of Eggs and Productive and Reproductive Performance of Laying Hens ”. International Journal of Poultry Science, vol. 7, no. 2, Jan. 2008, pp. 134–150, https://doi.org/10.3923/ijps.2008.134.150.