%0 Journal Article %A V. Guillemin %A S. Sternberg %T Convexity Properties of the Moment Mapping. %J Inventiones mathematicae %D 1982 %P 491-514 %V 67 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1982__67_142923/ %F IM_1982__67_142923