@misc{indiciaef977acfc9124,
  title = {Global Data Toolset (GDT)},
  author = {Jill J. Cress and Jodi L. Riegle},
  year = {2007},
  doi = {10.3133/fs20073104},
  url = {https://pubs.usgs.gov/publication/fs20073104},
  note = {Source identifier: fs20073104}
}