@Misc{ 
  Ron17,
  author = { Roncoroni, Alberto },
  title = { A Serrin-type symmetry result on model manifolds: an extension of the  Weinberger argument },
  journal = { Comptes Rendus Mathematique },
  year = { 2018 },
  doi = { https://doi.org/10.1016/j.crma.2018.04.012 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4870/ },
  note = { cvgmt preprint}
}