@Misc{ 
  CarZap14,
  author = { Carita, Graça and Zappale, Elvira },
  title = { Relaxation for an optimal design problem with linear growth and  perimeter penalization },
  journal = { Proc. Royal Soc. Edinburgh  A },
  year = { 2014 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2482/ },
  note = { cvgmt preprint}
}