“Analisis Potensi Swabakar (Self-Combustion) Berdasarkan Data Proksimat Pada Batubara PT. Geoservices Samarinda”. GEOSAINS KUTAI BASIN 5, no. 2 (December 31, 2022): 80–85. Accessed September 2, 2025. https://jurnal.fmipa.unmul.ac.id/index.php/geofis/article/view/1062.