@Article{ 
  biafocmas02,
  author = { Bianconi, Barbara and Focardi, Matteo and Mascolo, Elvira },
  title = { Existence of minimizers for a class of quasiconvex functionals with non standard growth },
  journal = { Ann. Matematica Pura e Applicata },
  year = { 2002 },
  volume = { 4 },
  number = { 180 },
  pages = { 493-510 },
  URL = { http://cvgmt.sns.it/paper/678/ },
  note = { cvgmt preprint}
}