E. Prabowo, T. Handono, and Emilyn Cabanda. “Stochastic Frontier Analysis of Indonesian Firm Efficiency: A Note”. International Journal of Banking and Finance 8, no. 2 (June 4, 2011): 74–91. Accessed May 6, 2024. https://e-journal.uum.edu.my/index.php/ijbf/article/view/8426.