@misc{indiciaea5055b13fc15,
  title = {Geologic map of the Bell Regio Quadrangle (V-9), Venus},
  author = {Bruce A. Campbell and Patricia G. Campbell},
  year = {2002},
  doi = {10.3133/i2743},
  url = {https://pubs.usgs.gov/publication/i2743},
  note = {Source identifier: i2743}
}