@Article{ 
  benmas04,
  author = { Benedetti, Irene and Mascolo, Elvira },
  title = { Regularity of minimizers for nonconvex vectorial integrals with $p-q$ growth via relaxation methods },
  journal = { Abstr. Appl. Anal. },
  year = { 2004 },
  number = { 1 },
  pages = {  27-44  },
  URL = { http://cvgmt.sns.it/paper/636/ },
  note = { cvgmt preprint}
}