%0 Journal Article %A H. Boseck %T On Algebraic and Semialgebraic Groups and Semigroups %J Journal of Lie theory %D 1993 %P 221-23 %V 3 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_1993_3_2_a5/ %F JLT_1993_3_2_a5