@misc{ELMA_1978__33_141212,
     title = {Mitteilung.},
     journal = {Elemente der Mathematik},
     pages = {56--56},
     publisher = {mathdoc},
     volume = {33},
     year = {1978},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1978__33_141212/}
}