@article{MZ_1972__129_171829,
     author = {Horst von Lienen},
     title = {Kriterien f\"ur n-te {Potenzreste.}},
     journal = {Mathematische Zeitschrift},
     pages = {185--194},
     publisher = {mathdoc},
     volume = {129},
     year = {1972},
     zbl = {0243.10004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1972__129_171829/}
}