@article{104939, author = {Ladislav Proch\'azka}, title = {A generalization of a theorem of R. Baer}, journal = {Commentationes Mathematicae Universitatis Carolinae}, volume = {004}, year = {1963}, pages = {105-108}, zbl = {0135.06101}, mrnumber = {0178067}, language = {en}, url = {http://dml.mathdoc.fr/item/104939} }
Procházka, Ladislav. A generalization of a theorem of R. Baer. Commentationes Mathematicae Universitatis Carolinae, Tome 004 (1963) pp. 105-108. http://gdmltest.u-ga.fr/item/104939/
Abelian groups, Budapest, 1958. (1958) | MR 0106942 | Zbl 0091.02704