@misc{indiciaea6531479b13d,
  title = {Wide Area Information Servers Class indexer and server},
  author = {Eliot J. Christian},
  year = {1993},
  doi = {10.3133/ofr93253},
  url = {https://pubs.usgs.gov/publication/ofr93253},
  note = {Source identifier: ofr93253}
}