@misc{indiciae324e71f04b36,
  title = {Proceedings of the U.S. Geological Survey Seventh Biennial Geographic Information Science Workshop, Denver, Colorado, May 12-16, 2008},
  year = {2008},
  doi = {10.3133/sir20085074},
  url = {https://pubs.usgs.gov/publication/sir20085074},
  note = {Source identifier: sir20085074}
}