@Article{ 
  ferfus07,
  author = { Ferriero, Alessandro and Fusco, Nicola },
  title = { A note on sets of finite perimeter in the plane },
  journal = { Discrete Cont. Dyn. Syst. Ser. B },
  year = { 2009 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1556/ },
  note = { cvgmt preprint}
}