@Misc{ CriLec11, author = { Crippa, Gianluca and Lecureux-Mercier, Magali }, title = { Existence and uniqueness of measure solutions for a system of continuity equations with non-local flow }, journal = { Nonlinear Differential Equations and Applications NoDEA }, year = { 2011 }, pages = { }, URL = { http://cvgmt.sns.it/paper/1747/ }, note = { cvgmt preprint} }