N. Khusnah, I. Zaki, and L. N. Rani, “THE EFFICIENCY ANALYSIS OF ISLAMIC RURAL BANKS (BPRS) IN EAST JAVA USING DATA ENVELOPMENT ANALYSIS (DEA) FOR 2012-2018 PERIOD”, JESTT, vol. 7, no. 2, pp. 294–304, Jun. 2020.