@Misc{ 
  DiFrRaVe17,
  author = { Di Fazio, Giuseppe and Francini, Elisa and Raciti, Fabio and Vessella, Sergio },
  title = { Stable determination of a Lamé coefficient by one internal measurement
  of displacement },
  journal = {  },
  year = { 2017 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5286/ },
  note = { cvgmt preprint}
}