%0 Journal Article %A G.B. SELIGMAN %T On Some Commutative ünipotent Groups. %J Inventiones mathematicae %D 1968 %P 129-137 %V 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1968__5_141909/ %F IM_1968__5_141909