%0 Journal Article %A X. Guo %T Abundant semigroups whose idempotents satisfy permutation identities. %J Semigroup forum %D 1997 %P 317-326 %V 54 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1997__54_2_135531/ %F SF_1997__54_2_135531