%0 Journal Article %A Benaddi, Ahmed %T Optimal energy decay rate of coupled wave equations. %J Portugaliae mathematica %D 2004 %P 81-96 %V 61 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_2004__61_1_50955/ %G en %F PORMA_2004__61_1_50955