@article{JMLR:v22:19-782,
  author  = {Viet Huynh and Nhat Ho and Nhan Dam and XuanLong Nguyen and Mikhail Yurochkin and Hung Bui and Dinh Phung},
  title   = {On efficient multilevel Clustering via Wasserstein distances},
  journal = {Journal of Machine Learning Research},
  year    = {2021},
  volume  = {22},
  number  = {145},
  pages   = {1--43},
  url     = {http://jmlr.org/papers/v22/19-782.html}
}