@article{MS2_1957__5_165662,
     author = {BJARNI J\'ONSSON},
     title = {On direct decompositions of torsionfree {Abelian} groups},
     journal = {Mathematica Scandinavica},
     pages = {230--235},
     publisher = {mathdoc},
     volume = {5},
     year = {1957},
     zbl = {0081.26202},
     url = {http://geodesic.mathdoc.fr/item/MS2_1957__5_165662/}
}