@Misc{ 
  bec08,
  author = { Beck, Lisa },
  title = { Boundary regularity results for weak solutions of subquadratic elliptic systems },
  journal = {  },
  year = { 2008 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/698/ },
  note = { cvgmt preprint}
}