Martins, L. G. R., Steiner, M. T. A., Wilhelm, V. E., Steiner Neto, P. J., & dos Santos, B. S. (2019). Efficiency and Productivity Change Evaluation of Paraná’s Credit Unions. IEEE Latin America Transactions, 17(4), 548–555. Retrieved from https://latamt.ieeer9.org/index.php/transactions/article/view/486