Graffe, R., and D. Linero. “Numerical Modeling of the Fracture Process in Mode I of Concrete Beams With Known Cracking Path by Means of a Discrete Model of Cohesive Crack”. Revista Ingeniería De Construcción, vol. 25, no. 3, Dec. 2010, pp. 399-18, https://ojs.uc.cl/index.php/ric/article/view/16609.