Suwarna, N. and Kusumahbrata, Y. (2010) “Macroscopic, Microscopic, and Paleo-depositional Features of selected Coals in Arahan, Banjarsari, Subanjeriji, and South Banko Regions, South Sumatra”, Indonesian Journal on Geoscience, 5(4), pp. 269–290. doi: 10.17014/ijog.5.4.269-290.