%0 Journal Article %A Samuel K. Hsiao %T A semigroup approach to wreath-product extensions of Solomon's descent algebras. %J The electronic journal of combinatorics %D 2009 %V 16 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/110/ %R 10.37236/110 %F 10_37236_110