@Article{ 
  deltop10,
  author = { De Lellis, Camillo and Peter M. Topping,  },
  title = { Almost-Schur lemma },
  journal = { Calc. Var. },
  year = { 2012 },
  volume = { 49 },
  pages = { 347-354 },
  URL = { http://cvgmt.sns.it/paper/682/ },
  note = { cvgmt preprint}
}