@Misc{ 
  BraFra19,
  author = { Brasco, Lorenzo and Franzina, Giovanni },
  title = { An overview on constrained critical points of Dirichlet integrals },
  journal = { Rendiconti Sem. Mat. Univ. Pol. Torino },
  year = { 2019 },
  pages = { 42 },
  URL = { http://cvgmt.sns.it/paper/4324/ },
  note = { cvgmt preprint}
}