RIZIEQ, H.; PRAYOGI, S. A.; MUDA, I. The Role of Concession Agreements in Regional Economic Development: A Case Study of Binjai Regency. EKALAYA : Jurnal Ekonomi Akuntansi, [S. l.], v. 3, n. 4, p. 340–347, 2025. DOI: 10.59966/ekalaya.v3i4.2139. Disponível em: https://jurnal.kalimasadagroup.com/index.php/ekalaya/article/view/2139. Acesso em: 12 may. 2026.