Ferro, Gustavo, and Vanesa D’Elia. “Higher Education Efficiency Frontier Analysis: A Review of Variables to Consider”. Journal on Efficiency and Responsibility in Education and Science 13, no. 3 (September 30, 2020): 140–153. Accessed April 26, 2024. https://www.eriesjournal.com/index.php/eries/article/view/311.