@article{Lopes:2009az,
  author = "Lopes, Raul",
  title = "{A two-dimensional Kolmogorov-Smirnov test}",
  doi = "10.22323/1.050.0045",
  journal = "PoS",
  year = 2009,
  volume = "ACAT",
  pages = "045"
}