@article{MZ_1953__58_169358,
     author = {Martin Kneser and Dieter Puppe},
     title = {Quadratische {Formen} und {Verschlingungsinvarianten} von {Knoten.}},
     journal = {Mathematische Zeitschrift},
     pages = {376--384},
     publisher = {mathdoc},
     volume = {58},
     year = {1953},
     zbl = {0050.39801},
     url = {http://geodesic.mathdoc.fr/item/MZ_1953__58_169358/}
}