EFISIENSI PERSAINGAN BANK UMUM SYARIAH: PENDEKATAN DATA ENVELOPMENT ANALYSIS (DEA) DAN BOSTON CONSULTING GROUP (BCG). Signifikan [Internet]. 2014 Oct. 23 [cited 2026 Aug. 27];3(1). Available from: https://journal.uinjkt.ac.id/index.php/signifikan/article/view/2059