@article{JMLR:v18:17-081,
  author  = {Aurko Roy and Sebastian Pokutta},
  title   = {Hierarchical Clustering via Spreading Metrics},
  journal = {Journal of Machine Learning Research},
  year    = {2017},
  volume  = {18},
  number  = {88},
  pages   = {1--35},
  url     = {http://jmlr.org/papers/v18/17-081.html}
}