@misc{indiciaee1a3fa04eaa8,
  title = {Remote compositional mapping of lunar titanium and surface maturity},
  author = {Johnson, J. R. and Larson, S. M. and Singer, Robert B.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910016715},
  note = {Source identifier: 19910016715}
}