@misc{indiciae3a1922b06967,
  title = {ERTS-1 image enhancement by optically combining density slices},
  author = {Tapper, G. O. and Pease, R. W.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730019600},
  note = {Source identifier: 19730019600}
}