@misc{indiciaee6b7ad1a41e3,
  title = {Unsupervised classification techniques as components of a data and information system},
  author = {Cummings, R. E. and Jayroe, R. R., Jr.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740032137},
  note = {Source identifier: 19740032137}
}