Mohammed, I.A., et al. “The Effect of Mercuric Exposure on Oxidative Stress and Enzymatic Antioxidant Defense System”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 23, no. 1, May 2017, pp. 227-3, https://jih.uobaghdad.edu.iq/index.php/j/article/view/1007.