Cárdenas Villarreal, Hugo A., and Paulina V. González Vergara. “Notes about the Proof of Pain and Suffering: An Attempt to Systematize”. Revista De La Facultad De Derecho Y Ciencias Políticas, vol. 37, no. 106, June 2007, pp. 213-37, https://revistas.upb.edu.co/index.php/derecho/article/view/4038.