@article{10_4064_cm_9_2_213_221,
     author = {S. G{\l}adysz},
     title = {Maximale {Untersemigruppen} und {Konvexit\"at} in {Gruppen}},
     journal = {Colloquium Mathematicum},
     pages = {213--221},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1962},
     doi = {10.4064/cm-9-2-213-221},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-9-2-213-221/}
}