@misc{indiciae08fade4502c4,
  title = {U.S. Geological Survey-Ingeominas mineral resource assessment of Colombia; additional ore deposit models},
  author = {Dennis P. Cox},
  year = {1983},
  doi = {10.3133/ofr83901},
  url = {https://pubs.usgs.gov/publication/ofr83901},
  note = {Source identifier: ofr83901}
}