%0 Journal Article %A Wei, Gongming %A Wang, Yanhua %T Existence of least energy solutions to coupled elliptic systems with critical nonlinearities %J Electronic Journal of Differential Equations %D 2008 %V 2008 %I mathdoc %U http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a62/ %G en %F EJDE_2008__2008__a62