@Article{ 
  bec07,
  author = { Beck, Lisa },
  title = { Partial regularity for weak solutions of nonlinear elliptic systems: the subquadratic case },
  journal = { Manuscr. Math. },
  year = { 2007 },
  volume = { 123 },
  pages = { 453-491 },
  URL = { http://cvgmt.sns.it/paper/313/ },
  note = { cvgmt preprint}
}