@Misc{ 
  CabCin12,
  author = { Cabré, Xavier and Cinti, Eleonora },
  title = { Sharp energy estimates for nonlinear fractional diffusion equations },
  journal = { Calc. Var. Partial Differential Equations },
  year = { 2012 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1914/ },
  note = { cvgmt preprint}
}