@Misc{ 
  SedWes13,
  author = { Cavalletti, Fabio and Sedjro, Marc and Westdickenberg, Michael },
  title = { A Simple Proof of Global Existence for the 1D Pressureless Gas Dynamics Equations },
  journal = { SIAM J. Math. Anal. },
  year = { 2013 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/2279/ },
  note = { cvgmt preprint}
}