Bautista Ruiz, J., and C. Ortiz Otálora. “Anticorrosive Evaluation of Sio2-Tio2-Zro2 Ceramic Trilayers Synthesized by the Sol-Gel Method”. Revista Facultad De Ingeniería, Vol. 16, no. 22, June 2009, pp. 43-48, https://revistas.uptc.edu.co/index.php/ingenieria/article/view/1339.