%0 Journal Article %A Cornelia Vizman %T Central Extensions of Coverings of Symplectomorphism Groups %J Journal of Lie Theory %D 2009 %P 237-249 %V 19 %N 2 %U http://geodesic.mathdoc.fr/item/JOLT_2009_19_2_a3/ %F JOLT_2009_19_2_a3