@article{approximatingpersistenthomologyforacloud,
  title = {Approximating persistent homology for a cloud of $n$ points in a subquadratic time},
  author = {Vitaliy Kurlin},
  year = {2013},
  eprint = {1312.1494},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1312.1494v2},
}