Geodesic
On mixed~LCA groups with commutative rings of continuous endomorphisms
Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2007), pp. 73-90

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Let $\mathcal L$ be the class of locally compact abelian (LCA) groups. For $X\in\mathcal L$, let $E(X)$ denote the ring of continuous endomorphisms of $X$. In this paper, we determine for certain subclasses$\mathcal S$ of $\mathcal L$ the groups $X\in\mathcal S$ such that $E(X)$ is commutative. The main results concern the case of mixed LCA groups. 
@article{BASM_2007_3_a6,
     author = {Valeriu Popa},
     title = {On {mixed~LCA} groups with commutative rings of continuous endomorphisms},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {73--90},
     publisher = {mathdoc},
     number = {3},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2007_3_a6/}
}
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Valeriu Popa. On mixed~LCA groups with commutative rings of continuous endomorphisms. Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica, no. 3 (2007), pp. 73-90. http://geodesic.mathdoc.fr/item/BASM_2007_3_a6/