@misc{indiciaead5aeac0ac5a,
  title = {Secretinite-Reflectance and chemical data from two high volatile bituminous coals (Upper Carboniferous) of North America},
  author = {P.C. Lyons and Maria Mastalerz},
  year = {2001},
  doi = {10.1016/s0166-5162(00)00041-0},
  url = {https://pubs.usgs.gov/publication/70023993},
  note = {Source identifier: 70023993}
}