EVALUASI PROFITABILITY INDEX MODEL OPERASIONAL TUG-BARGE BERBASIS CHARTER ATAU KEPEMILIKAN KAPAL DALAM PENGANGKUTAN BIJI NIKEL. INOVTEK Polbeng, [S. l.], v. 14, n. 02, p. 188–198, 2024. DOI: 10.35314/5wgxhp09. Disponível em: https://jurnal.polbeng.ac.id/index.php/IP/article/view/125.. Acesso em: 18 jan. 2025.