%0 Journal Article %A Joseph, K.T. %A LeFloch, P.G. %T Boundary layers in weak solutions of hyperbolic conservation laws. III: Vanishing relaxation limits. %J Portugaliae mathematica %D 2002 %P 453-494 %V 59 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_2002__59_4_50324/ %G en %F PORMA_2002__59_4_50324