@Article{ 
  balricser,
  author = { Balogh, Zoltan and Rickly, Matthieu and Serra Cassano, Francesco },
  title = { Comparison of Hausdorff measures with respect to the Euclidean and the Heisenberg metric },
  journal = { Publ. Mat. },
  year = { 2003 },
  volume = { 47 },
  number = { 1 },
  pages = { 237-259 },
  URL = { http://cvgmt.sns.it/paper/627/ },
  note = { cvgmt preprint}
}