Ortiz-Paniagua, Dr. Carlos F., and Carlos Timoteo Cervantes-González. “Defensive Expenditures: The Hidden Face of Blackberry Competitiveness in Michoacán, Mexico”. Ecosistemas y Recursos Agropecuarios 12, no. 1 (April 4, 2025). Accessed September 25, 2025. https://era.ujat.mx/index.php/rera/article/view/3831.