%0 Journal Article %A Brigitte E. Breckner %A Wolfgang A. F. Ruppert %T On Compactification Lattices of Subsemigroups of SL(2, R) %J Journal of Lie Theory %D 2004 %P 73-109 %V 14 %N 1 %U http://geodesic.mathdoc.fr/item/JOLT_2004_14_1_a5/ %F JOLT_2004_14_1_a5