@misc{indiciaeb9c7302dd55d,
  title = {Geochemistry and petrology of selected coal samples from Sumatra, Kalimantan, Sulawesi, and Papua, Indonesia},
  author = {H. E. Belkin and S.J. Tewalt and J.C. Hower and J.D. Stucker and J.M.K. O’Keefe},
  year = {2009},
  doi = {10.1016/j.coal.2008.08.001},
  url = {https://pubs.usgs.gov/publication/70033238},
  note = {Source identifier: 70033238}
}