Alfawwaz, Rasha A., and Adel A. Alhamdan. “The Modulatory Effect of N-Acetyl Cysteine Supplementation on Hepatic Glutathione Concentration and Lipid Peroxidation Status in Old Rats Fed a Low-Protein Diet”. Pakistan Journal of Nutrition, vol. 5, no. 2, Feb. 2006, pp. 156-65, https://doi.org/10.3923/pjn.2006.156.165.