Flach, Leonardo, Luísa Karam de Mattos, Anderson Renan Will, and Lucas Facciuto Roschel. 2017. “Efficiency of Expenditure on Education and Learning by Brazilian States: A Study With Data Envelopment Analysis”. Contabilidad Y Negocios 12 (23), 111-28. https://revistas.pucp.edu.pe/index.php/contabilidadyNegocios/article/view/19355.