del Valle, A., J. Pérez, A. Torres, and M. Martínez. “Pajaritos Bridge Evaluation: A 50 Year Old Concrete Structure in an Aggressive Environment in the Gulg of Mexico”. Revista Ingeniería De Construcción, vol. 21, no. 1, Apr. 2006, pp. 15-22, https://horizonteenfermeria.uc.cl/index.php/ric/article/view/16765.