@Article{ 
  elehab08,
  author = { Eleuteri, Michela and Habermann, Jens },
  title = { Regularity results for a class of obstacle problems under non standard growth conditions },
  journal = { J. Math. Anal. Appl. },
  year = { 2008 },
  volume = { 344 },
  number = { 2 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1552/ },
  note = { cvgmt preprint}
}