SILITONGA, Roland Y.H.; BAHAGIA, Senator Nur; SIMATUPANG, Tota; SISWANTO, Joko. Modeling the Competitiveness of Indonesian Palm Oil Industry: A Conceptual Model Using Hierarchical Multi-Level System Approach. Jurnal Teknik Industri: Jurnal Keilmuan dan Aplikasi Teknik Industri, [S. l.], v. 15, n. 2, p. 103–110, 2013. DOI: 10.9744/jti.15.2.103-110. Disponível em: https://jurnalindustri.petra.ac.id/index.php/ind/article/view/18847. Acesso em: 4 oct. 2025.