@misc{indiciaebaf70965ad04,
  title = {Extracting spectral contrast in Landsat Thematic Mapper image data using selective principal component analysis},
  author = {P.S. Chavez and Andy Y. Kwarteng},
  year = {1989},
  url = {https://pubs.usgs.gov/publication/70015931},
  note = {Source identifier: 70015931}
}