@article{MOMA_1950__54_176844,
     author = {W. Kn\"odel},
     title = {Reduzible {Zahlen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {308--312},
     publisher = {mathdoc},
     volume = {54},
     year = {1950},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1950__54_176844/}
}