@Misc{ 
  Gre23,
  author = { Afonso, Danilo Gregorin },
  title = { Semilinear equations in bounded cylinders: Morse index and bifurcation
  from one-dimensional solutions },
  journal = {  },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6456/ },
  note = { cvgmt preprint}
}