@article{MOMA_1973__77_177635,
     author = {Herbert Izbicki},
     title = {Eine {Verallgemeinerung} der {F\"arbungszahlen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {105--112},
     publisher = {mathdoc},
     volume = {77},
     year = {1973},
     zbl = {0257.05106},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1973__77_177635/}
}