Smargiassi, A., S. Mancini, F. Cavani, M. Benincasa, L. Roncucci, and P. Sena. “Induction of Altered Cellular Response to Oxidative Stress in HT29 Colon Cancer Cells Treated With Metformin”. Italian Journal of Anatomy and Embryology, vol. 120, no. 1, Sept. 2015, p. 69, https://oajournals.fupress.net/index.php/ijae/article/view/4023.