@article{JDM_1930__39_145856,
     author = {Miron Zarycki},
     title = {\"Uber den {Kern} einer {Menge.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {154--158},
     year = {1930},
     volume = {39},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JDM_1930__39_145856/}
}