@article{MAN_1967__174_161642,
     author = {W. MADER},
     title = {Homomorphieeigenschaften und mittlere {Kantendichte} von {Graphen.}},
     journal = {Mathematische Annalen},
     pages = {265--268},
     publisher = {mathdoc},
     volume = {174},
     year = {1967},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1967__174_161642/}
}