@Article{ 
  CicFocZep21,
  author = { Cicalese, Marco and Focardi, Matteo and Zeppieri, Caterina Ida },
  title = { Phase-field approximation of functionals defined on piecewise-rigid maps },
  journal = { J. Nonlinear Sci. },
  year = { 2021 },
  volume = { 31 },
  number = { 5 },
  pages = { Paper No. 78, 25pp },
  URL = { http://cvgmt.sns.it/paper/5070/ },
  note = { cvgmt preprint}
}