Herrero-Olarte, Susana, and Christopher Rivadeneira-Cornejo. “What Changes the Skill Premium in South America?”. Iberoamerican Journal of Development Studies 12, no. 1 (May 5, 2023): 218–240. Accessed December 5, 2025. https://papiro.unizar.es/ojs/index.php/ried/article/view/9327.