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@article{SF_1984__29_134687, author = {A. Nagy}, title = {On semigroups which are not divided by any non-trivial semigroup with an identity.}, journal = {Semigroup forum}, pages = {251--252}, publisher = {mathdoc}, volume = {29}, year = {1984}, zbl = {0545.20053}, url = {http://geodesic.mathdoc.fr/item/SF_1984__29_134687/} }
A. Nagy. On semigroups which are not divided by any non-trivial semigroup with an identity.. Semigroup forum, Tome 29 (1984), pp. 251-252. http://geodesic.mathdoc.fr/item/SF_1984__29_134687/