@misc{indiciae294bce5c3d96,
  title = {Reflectance increase from broad beam ion milling of coals and organic-rich shales due to increased surface flatness},
  author = {Brett J. Valentine and Paul C. Hackley and Javin J. Hatcherian and Jing-Jiang Yu},
  year = {2019},
  doi = {10.1016/j.coal.2018.11.004},
  url = {https://pubs.usgs.gov/publication/70208397},
  note = {Source identifier: 70208397}
}