@misc{indiciaed1e994203c27,
  title = {A first-look machine analysis of ERTS-1 data},
  author = {Landgrebe, D. A. and Hoffer, R. M. and Goodrick, F. E.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720023683},
  note = {Source identifier: 19720023683}
}