Araya Solano, Manuel. “Efficiency Assessment of Costa Rica’s Counties: A Non-Parametric Analysis of the County Competitiveness Index”. Tec Empresarial 13, no. 3 (November 4, 2019): 78–92. Accessed May 7, 2024. https://revistas.tec.ac.cr/index.php/tec_empresarial/article/view/4599.