2022. Analisis Potensi Swabakar (Self-Combustion) Berdasarkan Data Proksimat pada Batubara PT. Geoservices Samarinda. GEOSAINS KUTAI BASIN. 5, 2 (Dec. 2022), 80–85. DOI:https://doi.org/10.30872/geofisunmul.v5i2.1062.