@Article{ 
  FriPerSol20,
  author = { Friedrich, Manuel and Perugini, Matteo and Solombrino, Francesco },
  title = { Lower semicontinuity  for functionals defined  on piecewise rigid functions and on $GSBD$ },
  journal = { Journal of Functional Analysis },
  year = { 2021 },
  doi = { 10.1016/j.jfa.2021.108929 },
  volume = { 280 },
  number = { 7 },
  pages = { 108929 },
  URL = { http://cvgmt.sns.it/paper/4582/ },
  note = { cvgmt preprint}
}