@article{MAN_1962__147_160956,
     author = {K. Wagner and R. HALIN},
     title = {Homomorphiebasen von {Graphenmengen.}},
     journal = {Mathematische Annalen},
     pages = {126--142},
     publisher = {mathdoc},
     volume = {147},
     year = {1962},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1962__147_160956/}
}