%0 Journal Article %A C. Vizman %T Central Extensions of Coverings of Symplectomorphism Groups %J Journal of Lie theory %D 2009 %P 237-249 %V 19 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_2009_19_2_JLT_2009_19_2_a3/ %F JLT_2009_19_2_JLT_2009_19_2_a3