NI’MATULLAH, Imat; MUCHLIS; BATARA MAJU SIMATUPANG; MAHELAN PRABANTARIKSO. Analysis of Efficiency in Post-Merger Banks Using the Two-Stage DEA Method: A Case Study of BSI. International Journal of World Economics, [S. l.], v. 1, n. 4, p. 161–168, 2025. DOI: 10.71364/ijwe.v1i4.20. Disponível em: https://ijwe.americanjournal.us/index.php/ijwe/article/view/20. Acesso em: 17 apr. 2026.