@Misc{ 
  TerTorVit24,
  author = { Terracini, Susanna and Tortone, Giorgio and Vita, Stefano },
  title = { A priori regularity estimates for equations degenerating on nodal sets },
  journal = {  },
  year = { 2024 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/6531/ },
  note = { cvgmt preprint}
}