@article{MM2_1986__54_155123,
     author = {Franz Halter-Koch},
     title = {Konstruktion von {Klassenk\"orpern} und {Potenzrestkriterien} f\"ur quadratische {Einheiten.}},
     journal = {Manuscripta mathematica},
     pages = {453--492},
     publisher = {mathdoc},
     volume = {54},
     year = {1986},
     zbl = {0586.12008},
     url = {http://geodesic.mathdoc.fr/item/MM2_1986__54_155123/}
}