@misc{indiciaef04529ea85e4,
  title = {User’s guide for MapMark4—An R package for the probability calculations in three-part mineral resource assessments},
  author = {Karl J. Ellefsen},
  year = {2017},
  doi = {10.3133/tm7c14},
  url = {https://pubs.usgs.gov/publication/tm7C14},
  note = {Source identifier: tm7C14}
}