@Misc{ 
  DePFarVio23,
  author = { De Ponti, Nicolò and Farinelli, Sara and Violo, Ivan Yuri },
  title = { Pleijel nodal domain theorem in non-smooth setting },
  journal = {  },
  year = { 2023 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6161/ },
  note = { cvgmt preprint}
}