Approximate solutions of the Baer-Nunziato Model Fabien Crouzet, Frédéric Daude, Pascal Galon, Philippe Helluy, Jean-Marc Hérard, Olivier Hurisse and Yujie Liu ESAIM: Proc., 40 (2013) 63-82 Published online: 25 July 2013 DOI: 10.1051/proc/201340005