%0 Journal Article %A Kong, De-xing %T A necessary and sufficient condition for the diagonalization of multi-dimensional quasilinear systems %J Electronic journal of differential equations %D 1999 %V 1999 %U http://geodesic.mathdoc.fr/item/EJDE_1999__1999__a66/ %G en %F EJDE_1999__1999__a66