@Misc{ 
  BouMarTre13,
  author = { Bousquet, Pierre and Mariconda, Carlo and Treu, Giulia },
  title = { On the Lavrentiev phenomenon for multiple integral scalar variational problems },
  journal = {  },
  year = { 2013 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2166/ },
  note = { cvgmt preprint}
}