Salas, Sergio, and Dante Contreras. “Chilean Labor Market Efficiency: An Earning Frontier Approach”. Estudios de Economía 30, no. 1 (May 6, 2016): pp. 87–102. Accessed June 20, 2024. https://derechoinformatico.uchile.cl/index.php/EDE/article/view/40842.