@Misc{ 
  mag04a,
  author = { Maggi, Francesco },
  title = { On Serrin's Lower Semicontinuity Problem },
  journal = {  },
  year = { 2004 },
  pages = { 103 },
  URL = { http://cvgmt.sns.it/paper/493/ },
  note = { cvgmt preprint}
}