@misc{indiciae795967a7308d,
  title = {Orange material in the Sulpicius Gallus formation at the southwestern edge of Mare Serenitatis},
  author = {Baerbel K. Lucchitta and H.H. Schmitt},
  year = {1974},
  url = {https://pubs.usgs.gov/publication/70200523},
  note = {Source identifier: 70200523}
}