%0 Journal Article %A U. Knauer %A A. Mikhalev %T Endomorphism monoids of free acts and 0-wreath products of monoids, I. Annihilator properties. %J Semigroup forum %D 1980 %P 177-188 %V 19 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1980__19_134381/ %F SF_1980__19_134381