Geodesic
On direct summands of tensor product
Fundamentalʹnaâ i prikladnaâ matematika, Tome 4 (1998) no. 2, pp. 775-777.

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It is shown that every direct summand of tensor product $G\otimes A$ of a torsion free rank 1 Abelian group $A$ and Abelian group $G$ of $\mathfrak{J}_{PA}$ has a form $\widetilde{G}\otimes A$, where $\widetilde{G}$ is the subgroup of $G$ isomorphic to some direct summand of $G$. 
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     author = {E. B. Malyshev},
     title = {On direct summands of tensor product},
     journal = {Fundamentalʹna\^a i prikladna\^a matematika},
     pages = {775--777},
     publisher = {mathdoc},
     volume = {4},
     number = {2},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FPM_1998_4_2_a23/}
}
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E. B. Malyshev. On direct summands of tensor product. Fundamentalʹnaâ i prikladnaâ matematika, Tome 4 (1998) no. 2, pp. 775-777. http://geodesic.mathdoc.fr/item/FPM_1998_4_2_a23/