@misc{indiciae4c3822cf90b6,
  title = {Solid-state 13C nuclear magnetic resonance studies of coalified gymnosperm xylem tissue from Australian brown coals},
  author = {Patrick G. Hatcher and Harry E. Lerch and Anne L. Bates and T.V. Verheyen},
  year = {1989},
  doi = {10.1016/0146-6380(89)90068-5},
  url = {https://pubs.usgs.gov/publication/70016104},
  note = {Source identifier: 70016104}
}