@article{IVM_1990_4_a10,
     author = {A. R. Chekhlov},
     title = {Direct products and direct sums of torsion-free abelian $QCPI$-groups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {58--67},
     year = {1990},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1990_4_a10/}
}