@article{GDZPPN001261819, title = {Injective endomorphisms of Gx-normal semigroups: Infinite defects.}, journal = {Semigroup forum}, volume = {44}, year = {1992}, pages = {9-22}, zbl = {0787.20038}, url = {http://dml.mathdoc.fr/item/GDZPPN001261819} }
Levi, I. Injective endomorphisms of Gx-normal semigroups: Infinite defects.. Semigroup forum, Tome 44 (1992) pp. 9-22. http://gdmltest.u-ga.fr/item/GDZPPN001261819/