@article{ELMA_1977__32_141191,
     author = {H. Bodendiek and H. Schumacher},
     title = {\"Uber grazi\"ose {Numerierungen} von {Graphen.}},
     journal = {Elemente der Mathematik},
     pages = {49--58},
     publisher = {mathdoc},
     volume = {32},
     year = {1977},
     zbl = {0361.05050},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1977__32_141191/}
}