Riasetiawan, M. ., Anggara, F. ., Syahra, V. ., Ashari, A. ., Prastowo, B. N., Kusumawardani, I. C. . and Wahyu, P. . (2023) “Coal rank data analytic for ASTM and PSDBMP classification”, International Journal of Innovative Research and Scientific Studies, 6(2), pp. 374–380. doi: 10.53894/ijirss.v6i2.1469.