Lara Gomez, Wilmer Javier, Hugo Fernando Castro Silva, and José David Cordero Díaz. “Support to Tactical Management for Continuous Improvement by Applying the DMAIC Cycle in the Purchase Order Process of Colombia and Ecuador in the ECOLAB Company)”. Mundo FESC Journal 16, no. 36 (September 1, 2026): 27–50. Accessed October 31, 2026. https://www.fesc.edu.co/Revistas/OJS/index.php/mundofesc/article/view/2121.