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@article{SF_1992__45_3_135166, author = {I. Levi}, title = {Injective endomorphisms of {Gx-normal} semigroups: {Infinite} defects.}, journal = {Semigroup forum}, pages = {9--22}, publisher = {mathdoc}, volume = {45}, number = {3}, year = {1992}, zbl = {0787.20038}, url = {http://geodesic.mathdoc.fr/item/SF_1992__45_3_135166/} }
I. Levi. Injective endomorphisms of Gx-normal semigroups: Infinite defects.. Semigroup forum, Tome 45 (1992) no. 3, pp. 9-22. http://geodesic.mathdoc.fr/item/SF_1992__45_3_135166/