@Misc{ 
  LeDLiRaj15,
  author = { Le Donne, Enrico and Li, Sean and Rajala, Tapio },
  title = { Ahlfors-regular distances on the Heisenberg group without biLipschitz
  pieces },
  journal = {  },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4156/ },
  note = { cvgmt preprint}
}