@Misc{ 
  CasCatMan22,
  author = { Castorina, Daniele and Catino, Giovanni and Mantegazza, Carlo },
  title = { Semilinear Li & Yau inequalities },
  journal = { Ann. Mat. Pura Appl. },
  year = { 2022 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5412/ },
  note = { cvgmt preprint}
}