@article{rand1971,
  author = {Rand, W.M.},
  interhash = {1afaf0170bc705a9e49b625f67679ee2},
  intrahash = {fd52548cb4bcd8e83dd27e4b55eff1f3},
  journal = {Journal of the American Statistical Association },
  number = 336,
  pages = {846-850},
  title = {Objective criteria for the evaluation of clustering methods},
  volume = 66,
  year = 1971
}