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@article{MAN_1967__170_161545, author = {G. GR\"ATZER}, title = {On the {Endomorphism} {Semigroup} of {Simple} {Algebras.}}, journal = {Mathematische Annalen}, pages = {334--338}, publisher = {mathdoc}, volume = {170}, year = {1967}, zbl = {0146.02105}, url = {http://geodesic.mathdoc.fr/item/MAN_1967__170_161545/} }
G. GRÄTZER. On the Endomorphism Semigroup of Simple Algebras.. Mathematische Annalen, Tome 170 (1967), pp. 334-338. http://geodesic.mathdoc.fr/item/MAN_1967__170_161545/