@misc{indiciaea5843051dd0b,
  title = {Lunar terrain mapping and relative-roughness analysis},
  author = {Lawrence C. Rowan and John F. McCauley and Esther A. Holm},
  year = {1971},
  doi = {10.3133/pp599g},
  url = {https://pubs.usgs.gov/publication/pp599G},
  note = {Source identifier: pp599G}
}