@Article{ 
  criottwes06,
  author = { Crippa, Gianluca and Otto, Felix and Westdickenberg, Michael },
  title = { Regularizing effect of nonlinearity in multidimensional scalar conservation laws },
  journal = { In: Transport Equations and Multi-D Hyperbolic Conservation Laws, Lecture Notes of the Unione Matematica Italiana },
  year = { 2008 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/918/ },
  note = { cvgmt preprint}
}