@misc{indiciaed369bd3a4453,
  title = {Europa: Characterization and interpretation of global spectral surface units},
  author = {M. L. Nelson and T. B. McCord and Roger N. Clark and T. V. Johnson and D. L. Matson and J. A. Mosher and Laurence A. Soderblom},
  year = {1986},
  doi = {10.1016/0019-1035(86)90068-0},
  url = {https://pubs.usgs.gov/publication/70015096},
  note = {Source identifier: 70015096}
}