@article{MZ_1980__173_172971,
     author = {Hans Opolka},
     title = {Zur {Aufl\"osung} zahlentheoretischer {Knoten.}},
     journal = {Mathematische Zeitschrift},
     pages = {95--104},
     year = {1980},
     volume = {173},
     zbl = {0425.12010},
     url = {http://geodesic.mathdoc.fr/item/MZ_1980__173_172971/}
}