@Misc{ 
  LeDXie15,
  author = { Le Donne, Enrico and Xie, Xiangdong },
  title = { Rigidity of fiber-preserving quasisymmetric maps },
  journal = {  },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4158/ },
  note = { cvgmt preprint}
}