@misc{indiciae1cd63ac3ec4c,
  title = {The 3D Elevation Program: summary for Colorado},
  author = {William J. Carswell},
  year = {2013},
  doi = {10.3133/fs20133050},
  url = {https://pubs.usgs.gov/publication/fs20133050},
  note = {Source identifier: fs20133050}
}