@article{MZ_1951__54_169212,
     author = {I.S. Cohen and I. Kaplansky},
     title = {Rings for which every module is a direct sum of cyclic modules.},
     journal = {Mathematische Zeitschrift},
     pages = {97--101},
     publisher = {mathdoc},
     volume = {54},
     year = {1951},
     zbl = {0043.26702},
     url = {http://geodesic.mathdoc.fr/item/MZ_1951__54_169212/}
}