@misc{ELMA_1972__27_141062,
     title = {Neue {Aufgaben.}},
     journal = {Elemente der Mathematik},
     pages = {67--68},
     publisher = {mathdoc},
     volume = {27},
     year = {1972},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1972__27_141062/}
}