@Misc{ 
  Ber21a,
  author = { Bernardini, Chiara },
  title = { Existence and Compactness of Conformal Metrics on the Plane with Unbounded and Sign-Changing Gaussian Curvature },
  journal = { Vietnam J. Math. },
  year = { 2021 },
  doi = { 10.1007/s10013-021-00540-5 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5833/ },
  note = { cvgmt preprint}
}