%0 Journal Article %A Villarreal, F. %T Colombeau's theory and shock wave solutions for systems of PDEs %J Electronic Journal of Differential Equations %D 2000 %V 2000 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2000__2000__a119/ %G en %F EJDE_2000__2000__a119