@misc{indiciae259ed13b0b93,
  title = {GSMCAD a new computer program that combines the functions of the GSMAP and GSMEDIT programs and is compatible with Microsoft Windows and ARC/INFO},
  author = {Van S. Williams and Gary I. Selner and Richard B. Taylor},
  year = {1996},
  doi = {10.3133/ofr967},
  url = {https://pubs.usgs.gov/publication/ofr967},
  note = {Source identifier: ofr967}
}