@article{MZ_1974__140_172149,
     author = {R\"udiger G\"obel},
     title = {The {Characteristic} {Subgroups} of the {Baer-Specker} {Group.}},
     journal = {Mathematische Zeitschrift},
     pages = {289--292},
     year = {1974},
     volume = {140},
     zbl = {0281.20026},
     url = {http://geodesic.mathdoc.fr/item/MZ_1974__140_172149/}
}