%0 Journal Article %A Larry Bates %T A Symplectic Rigidity Theorem. %J Manuscripta mathematica %D 1990 %P 109-112 %V 66 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1990__66_1_155462/ %F MM2_1990__66_1_155462