@misc{indiciae26a802ef7aa9,
  title = {An unsupervised classification technique for multispectral remote sensing data.},
  author = {Su, M. Y. and Cummings, R. E.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730055077},
  note = {Source identifier: 19730055077}
}