@misc{ELMA_1950__5_140529,
     title = {Neue {Aufgaben.}},
     journal = {Elemente der Mathematik},
     pages = {21--21},
     year = {1950},
     volume = {5},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1950__5_140529/}
}