“Efficiency Calculation, Effectiveness and Productivity of Sports Federations Using the Method (DEA)”, Rev. Publicando, vol. 5, no. 15 (1), pp. 328–345, Jun. 2018, Accessed: Oct. 25, 2026. [Online]. Available: https://www.revistapublicando.org/revista/index.php/crv/article/view/1340