Geodesic
Quasi-endomorphism rings with the zero Jacobson radical of almost completely decomposable torsion-free Abelian groups of rank~4
Fundamentalʹnaâ i prikladnaâ matematika, Tome 17 (2012) no. 8, pp. 169-175.

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In the paper, a description of rings of quasi-endomorphisms of almost completely decomposable torsion-free Abelian groups of rank 4 with the zero Jacobson radical is obtained. 
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A. V. Cherednikova. Quasi-endomorphism rings with the zero Jacobson radical of almost completely decomposable torsion-free Abelian groups of rank~4. Fundamentalʹnaâ i prikladnaâ matematika, Tome 17 (2012) no. 8, pp. 169-175. http://geodesic.mathdoc.fr/item/FPM_2012_17_8_a16/

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