@Misc{ 
  BozBra24,
  author = { Bozzola, Francesco and Brasco, Lorenzo },
  title = { The role of topology and capacity in some bounds for principal frequencies },
  journal = {  },
  year = { 2024 },
  pages = { 37 },
  URL = { http://cvgmt.sns.it/paper/6357/ },
  note = { cvgmt preprint}
}