%0 Journal Article %A Tomsky, Judith %T Decomposition series of a certain semigroup %J Portugaliae mathematica %D 1967 %P 293-298 %V 26 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PORMA_1967__26_3_115031/ %G en %F PORMA_1967__26_3_115031