%0 Journal Article %A Aldo de Luca %A Antonio Restivo %T A synchronization property of pure subsemigroups. %J Semigroup forum %D 1981 %P 233-240 %V 23 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1981__23_134515/ %F SF_1981__23_134515