@Misc{ 
  BalIur21,
  author = { Ballard, Patrick and Iurlano, Flaviana },
  title = { Homogenization of friction in a 2D linearly elastic contact problem },
  journal = {  },
  year = { 2021 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/5313/ },
  note = { cvgmt preprint}
}