@Misc{ 
  HasKokPol15,
  author = { Hassannezhad, Asma and Kokarev, Gerasim and Polterovich, Iosif },
  title = { Eigenvalue inequalities on Riemannian manifolds with a lower Ricci
  curvature bound },
  journal = {  },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4933/ },
  note = { cvgmt preprint}
}