@article{splittingmethodsforconvexclustering,
  title = {Splitting Methods for Convex Clustering},
  author = {Eric C. Chi and Kenneth Lange},
  year = {2013},
  eprint = {1304.0499},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1304.0499v2},
}