@article{ARM_2009_45_1_a5,
     author = {Ecevit, \c{S}ule and Ko\c{s}an, Muhammet Tamer},
     title = {On rings all of whose modules are retractable},
     journal = {Archivum mathematicum},
     pages = {71--74},
     year = {2009},
     volume = {45},
     number = {1},
     mrnumber = {2591662},
     zbl = {1203.16006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2009_45_1_a5/}
}