@Misc{ 
  BoRoScSc15,
  author = { Bonetti, Elena and Rocca, Elisabetta and Scala, Riccardo and Schimperna, Giulio },
  title = { On the strongly damped wave equation with   constraint },
  journal = {  },
  year = { 2015 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2641/ },
  note = { cvgmt preprint}
}