@misc{indiciae06fbf53c8d6f,
  title = {Evaluation of the United States Geological Survey's Three-Step assessment methodology},
  author = {D.P. Harris and Michael Rieber},
  year = {1993},
  doi = {10.3133/ofr93258a},
  url = {https://pubs.usgs.gov/publication/ofr93258A},
  note = {Source identifier: ofr93258A}
}