@Misc{ 
  Fri16,
  author = { Friedrich, Manuel },
  title = { A piecewise Korn inequality in $SBD$ and applications to embedding and density results },
  journal = {  },
  year = { 2016 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/3034/ },
  note = { cvgmt preprint}
}