@Article{ 
  brapra10,
  author = { Brasco, Lorenzo and Pratelli, Aldo },
  title = { Sharp stability of some spectral inequalities },
  journal = { GAFA },
  year = { 2011 },
  pages = { 31 },
  URL = { http://cvgmt.sns.it/paper/1034/ },
  note = { cvgmt preprint}
}