@article{onapproximabilityofclusteringproblems,
  title = {On Approximability of Clustering Problems Without Candidate Centers},
  author = {Vincent Cohen-Addad and C. S. Karthik and Euiwoong Lee},
  year = {2020},
  eprint = {2010.00087},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2010.00087v2},
}