%0 Journal Article %A T. Ton-That %A T.-D. Tran %T Invariant Theory of a Class of Infinite-Dimensional Groups %J Journal of Lie theory %D 2003 %P 401-425 %V 13 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_2003_13_2_JLT_2003_13_2_a5/ %F JLT_2003_13_2_JLT_2003_13_2_a5