@Misc{ 
  Zem20,
  author = { Zemas, Konstantinos },
  title = { Geometric rigidity estimates for isometric and conformal maps from $\mathbb{S}^{n−1}$ to $\mathbb{R}^n$ },
  journal = {  },
  year = { 2020 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6355/ },
  note = { cvgmt preprint}
}