Putri DA, Rusmita SA. THE ANALYSIS OF COST EFFICIENCY LEVELS OF SHARIA BANKS WITH STOCHASTIC FRONTIER ANALYSIS METHODS FOR THE 2015-2018 PERIOD. JESTT [Internet]. 2020 Jun. 11 [cited 2024 Aug. 10];7(1):199-206. Available from: https://e-journal.unair.ac.id/JESTT/article/view/16041