@Article{ 
  CatMonPun18,
  author = { Catino, Giovanni and Monticelli, Dario Daniele and Punzo, Fabio },
  title = { The Poisson equation on manifolds with positive essential spectrum },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2019 },
  volume = { 58 },
  number = { 4 },
  pages = { 146 },
  URL = { http://cvgmt.sns.it/paper/3813/ },
  note = { cvgmt preprint}
}