SUDRAJAT, A.; ERWIN WIJAYA, A. Blending Plan Batubara Sulfur Tinggi dengan Kandungan Sulfur Rendah. ReTII, [S. l.], p. 246 –, 2024. Disponível em: https://journal.itny.ac.id/index.php/ReTII/article/view/5467. Acesso em: 4 apr. 2025.