@misc{indiciae605043539abe,
  title = {NSPACE - An unsupervised clustering algorithm based on discretized marginal distributions},
  author = {Eigen, D. J. and Northouse, R. A.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740038587},
  note = {Source identifier: 19740038587}
}