@Misc{ 
  GiaTreGio17,
  author = { Giacomo De Palma,  and Giovannetti, Vittorio and Trevisan, Dario },
  title = { Multimode Gaussian optimizers for the Wehrl entropy and quantum Gaussian
  channels },
  journal = {  },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3479/ },
  note = { cvgmt preprint}
}