%0 Journal Article %A Elliott H. Lieb %T On the lowest eigenvalue of the Laplacian for the intersection of two domains. %J Inventiones mathematicae %D 1983 %P 441-448 %V 74 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1983__74_143081/ %F IM_1983__74_143081