@article{GDZPPN001255835, title = {Semigroups whose proper two-sided ideals are power joined.}, journal = {Semigroup forum}, volume = {24}, year = {1982}, pages = {325-330}, zbl = {0498.20047}, url = {http://dml.mathdoc.fr/item/GDZPPN001255835} }
Nagy, A. Semigroups whose proper two-sided ideals are power joined.. Semigroup forum, Tome 24 (1982) pp. 325-330. http://gdmltest.u-ga.fr/item/GDZPPN001255835/