@article{MOMA_1968__72_177424,
     author = {Walter Oberschelp},
     title = {Die {Anzahl} nicht-isomorpher {m-Graphen.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {220--223},
     publisher = {mathdoc},
     volume = {72},
     year = {1968},
     zbl = {0187.21301},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1968__72_177424/}
}