Nurhandoko, Bagus, Syahrul Mubarok, Indriani Sukmana, Fajril Ambia, Budi Sulistyanto, Syafrizal Syafrizal, Y. Wiyanto, and Hussein Rudiyanto. 2016. “Characterization of Subsurface Coal Using Seismic Tomography : A Case Study in Muara Enim South Sumatera”. Indonesian Journal of Physics 20 (2), 41-44. https://doi.org/10.5614/itb.ijp.2009.20.2.5.