Geodesic
Periodic Abelian Groups with $UA$-Rings of Endomorphisms
Matematičeskie zametki, Tome 70 (2001) no. 5, pp. 736-741

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A ring $R$ is said to be a unique addition ring (a $UA$-ring) if its multiplicative semigroup $(R,\cdot)$ can uniquely be endowed with a binary operation $+$ in such a way that $(R,\cdot,+)$ becomes a ring. An Abelian group is said to be an $\operatorname{End}$-$UA$-group if the endomorphism ring of the group is a $UA$-ring. In the paper we study conditions under which an Abelian group is an $\operatorname{End}$-$UA$-group. 
@article{MZM_2001_70_5_a7,
     author = {O. V. Ljubimtsev},
     title = {Periodic {Abelian} {Groups} with $UA${-Rings} of {Endomorphisms}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {736--741},
     publisher = {mathdoc},
     volume = {70},
     number = {5},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_70_5_a7/}
}
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O. V. Ljubimtsev. Periodic Abelian Groups with $UA$-Rings of Endomorphisms. Matematičeskie zametki, Tome 70 (2001) no. 5, pp. 736-741. http://geodesic.mathdoc.fr/item/MZM_2001_70_5_a7/