%0 Journal Article %A S. Bulman-Fleming %A K. McDowell %T Flatness and amalgamation in semigroups. %J Semigroup forum %D 1984 %P 337-342 %V 29 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1984__29_134694/ %F SF_1984__29_134694