@article{ELMA_1951__6_140565,
     author = {H. Sch\"uepp},
     title = {Die graphische {L\"osung} des {Doppelsternproblems.}},
     journal = {Elemente der Mathematik},
     pages = {33--38},
     publisher = {mathdoc},
     volume = {6},
     year = {1951},
     zbl = {0044.45402},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1951__6_140565/}
}