@Article{ 
  elehaba,
  author = { Eleuteri, Michela and Habermann, Jens },
  title = { Calderón-Zygmund type estimates for a class of obstacle problems with p(x) growth },
  journal = { J. Math. Anal. Appl. },
  year = { 2010 },
  volume = { 372 },
  number = { (1) },
  pages = { 140-161 },
  URL = { http://cvgmt.sns.it/paper/484/ },
  note = { cvgmt preprint}
}