Valenzuela, A., J. Sanhueza, and S. Nieto. “Cholesterol Oxidized Products in Foods: Potential Health Hazards and the Role of Antioxidants in Prevention”. Grasas Y Aceites, vol. 55, no. 3, Sept. 2004, pp. 312-20, doi:10.3989/gya.2004.v55.i3.194.