Rusmita, Sylva Alif, and Devy Ariesta Putri. “Indonesian Islamic Commercial Banks’ Efficiency: A Stochastic Frontier Analysis”. Shirkah: Journal of Economics and Business 5, no. 3 (December 28, 2020): 386–410. Accessed February 24, 2025. https://shirkah.or.id/new-ojs/index.php/home/article/view/283.