@misc{indiciae4a1da117ba4d,
  title = {A semiobjective method for condensing classifications},
  author = {F. Demirmen},
  year = {1973},
  doi = {10.1007/bf02111815},
  url = {https://pubs.usgs.gov/publication/70001379},
  note = {Source identifier: 70001379}
}