@Misc{ 
  BarJev20,
  author = { Bartolucci, Daniele and Jevnikar, Aleks },
  title = { On the uniqueness and monotonicity of solutions of free boundary problems },
  journal = { J. Diff. Eq. },
  year = { 2022 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4700/ },
  note = { cvgmt preprint}
}