@Article{ 
  ambcri06,
  author = { Ambrosio, Luigi and Crippa, Gianluca },
  title = { Existence, uniqueness, stability and differentiability properties of the flow associated to weakly differentiable vector fields },
  journal = { In: Transport Equations and Multi-D Hyperbolic Conservation Laws, Lecture Notes of the Unione Matematica Italiana },
  year = { 2008 },
  volume = { 5 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/543/ },
  note = { cvgmt preprint}
}