@inproceedings{aconstantfactorbicriteriaapproximation1,
  title = {A Constant-Factor Bi-Criteria Approximation Guarantee for k-means++},
  author = {Dennis Wei},
  year = {2016},
  booktitle = {NeurIPS 2016 12},
  url = {http://papers.nips.cc/paper/6309-a-constant-factor-bi-criteria-approximation-guarantee-for-k-means},
}