@misc{indiciaeb3f649a07e3c,
  title = {Nuclear magnetic resonance studies of ancient buried wood-II. Observations on the origin of coal from lignite to bituminous coal},
  author = {Patrick G. Hatcher and Irving A. Breger and Nikolaus Szeverenyi and G.E. Maciel},
  year = {1982},
  doi = {10.1016/0146-6380(82)90003-1},
  url = {https://pubs.usgs.gov/publication/70011679},
  note = {Source identifier: 70011679}
}