@misc{indiciae932364b699d1,
  title = {Ferric iron in primitive asteroids - A 0.43-micron absorption feature},
  author = {Vilas, Faith and Hatch, Erin C. and Larson, Stephen M. and Sawyer, Scott R. and Gaffey, Michael J.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19930051803},
  note = {Source identifier: 19930051803}
}