@article{MET_1975__22_175657,
     author = {P. Sint},
     title = {Einf\"uhrung in die {Graphentheorie}  -  {Kaufmann,} {A.}},
     journal = {Metrika},
     pages = {63--63},
     publisher = {mathdoc},
     volume = {22},
     year = {1975},
     url = {http://geodesic.mathdoc.fr/item/MET_1975__22_175657/}
}