@misc{indiciaed9589858f7e4,
  title = {Mars: Definition and characterization of global surface units with emphasis on composition},
  author = {Mccord, T. B. and Singer, R. B. and Hawke, B. R. and Adams, J. B. and Evans, D. L. and Head, J. W. and Mouginis-Mark, P. J. and Pieters, C. M. and Huguenin, R. L. and Zisk, S. H.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19830034363},
  note = {Source identifier: 19830034363}
}