@article{ELMA_1989__44_3_141456,
     author = {K. Burde},
     title = {Zu einer {Aufgabe} der {Kombinatorik.}},
     journal = {Elemente der Mathematik},
     pages = {76--78},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {1989},
     zbl = {0705.05004},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1989__44_3_141456/}
}