@misc{indiciaec2612ef71610,
  title = {Evaluaton of improved digital-processing techniques of LANDSAT data for sulfide mineral prospecting},
  author = {Ralph George Schmidt and Ralph Bernstein},
  year = {1975},
  doi = {10.3133/ofr75632},
  url = {https://pubs.usgs.gov/publication/ofr75632},
  note = {Source identifier: ofr75632}
}