@Article{ 
  HirZem22,
  author = { Hirsch, Jonas and Zemas, Konstantinos },
  title = { A note on a rigidity estimate for degree $\pm 1$  conformal maps on $\mathbb{S}^2$ },
  journal = { Bulletin of the London Mathematical Society },
  year = { 2022 },
  doi = { https://doi.org/10.1112/blms.12591 },
  volume = { 54, Issue 1 },
  pages = { 256-263 },
  URL = { http://cvgmt.sns.it/paper/5718/ },
  note = { cvgmt preprint}
}