@Misc{ 
  fig09c,
  author = { Figalli, Alessio },
  title = { On flows of $H^{3/2}$-vector fields on the circle },
  journal = { Math. Ann. },
  year = { 2009 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/1658/ },
  note = { cvgmt preprint}
}