@article{IM_1980__62_142778,
     author = {Rainer Zimmert},
     title = {Ideale kleiner {Norm} in {Idealklassen} und eine {Regulatorabsch\"atzung.}},
     journal = {Inventiones mathematicae},
     pages = {367--380},
     publisher = {mathdoc},
     volume = {62},
     year = {1980},
     zbl = {0456.12003},
     url = {http://geodesic.mathdoc.fr/item/IM_1980__62_142778/}
}