Duque Pérez, Alejandro. “A Revision of the Classical Concept of Contract. An Approach to the Consumption Contract”. Revista de la Facultad de Derecho y Ciencias Políticas 38, no. 109 (December 15, 2008): 453–479. Accessed July 10, 2026. https://revistas.upb.edu.co/index.php/derecho/article/view/3901.