Velandia Pacheco, Gabriel, Adalberto Escobar Castillo, José García Rodríguez, and Carmen Riquett Vides. “How Do Highly Informal MSMEs Determine Costs? A Cooperative Case in the Magdalena’ Department”. International Journal of Management Science and Operations Research 6, no. 1 (July 20, 2021): 11-20. Accessed April 27, 2026. https://ijmsoridi.com/index.php/ijmsor/article/view/118.