Torres Navarro, Carlos Alonso, and Javier Andrés Córdova Neira. “Design of Expert System for Decision Making in Materials Purchasing”. Cuadernos de Administración 30, no. 52 (January 5, 2015): 20–30. Accessed February 4, 2023. https://cuadernosdeadministracion.univalle.edu.co/index.php/cuadernos_de_administracion/article/view/27.