%0 Journal Article %A Carolyn Gordon %A D. DeTurck %A H. Gluck %T The inaudible geometry of nilmanifolds. %J Inventiones mathematicae %D 1993 %P 271-284 %V 111 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1993__111_1_144078/ %F IM_1993__111_1_144078