@article{ZNSL_1989_175_a14,
     author = {A. V. Jakovlev},
     title = {Torsion-free abelian groups of finit rank and its direct decompositions},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {135--153},
     publisher = {mathdoc},
     volume = {175},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_175_a14/}
}