@misc{indiciaee7d1d99a6edc,
  title = {The origin of epigenetic graphite: Evidence from isotopes},
  author = {P. L. Weis and I. Friedman and J.P. Gleason},
  year = {1981},
  doi = {10.1016/0016-7037(81)90086-7},
  url = {https://pubs.usgs.gov/publication/70011719},
  note = {Source identifier: 70011719}
}