@article{JRAM_1973__0262_0263_151344,
     author = {K. Wagner and R. Bodendieck},
     title = {Die {Klasse} der minimalen, nicht-projektiven {Graphen} mit einer {Kreuzhaube.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {58--65},
     publisher = {mathdoc},
     volume = {0262_0263},
     year = {1973},
     zbl = {0272.05104},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1973__0262_0263_151344/}
}