@article{CMUC_1983__24_3_a1,
     author = {O'Neill, John D.},
     title = {On summands of direct products of {Abelian} groups},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {407--413},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1983},
     mrnumber = {730136},
     zbl = {0538.20025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1983__24_3_a1/}
}