TY - JOUR AU - A. Nagy TI - Semigroups whose proper two-sided ideals are power joined. JO - Semigroup forum PY - 1982 SP - 325 EP - 330 VL - 25 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SF_1982__25_134581/ ID - SF_1982__25_134581 ER -