@misc{indiciae3e42e5f47a1f,
  title = {Spectrophotometric properties of materials observed by Pancam on the Mars Exploration Rovers: 2. Opportunity},
  author = {J. R. Johnson and W.M. Grundy and M.T. Lemmon and J.F. Bell and M. J. Johnson and R. Deen and R. E. Arvidson and W. H. Farrand and E. Guinness and A. G. Hayes and Kenneth E. Herkenhoff and F. Seelos and J. Soderblom and S. Squyres},
  year = {2006},
  doi = {10.1029/2006je002762},
  url = {https://pubs.usgs.gov/publication/70028858},
  note = {Source identifier: 70028858}
}