TY  - JOUR
AU  - Ralph Berr
TI  - Sums of mixed powers in fields and orderings of prescribed level.
JO  - Mathematische Zeitschrift
PY  - 1992
SP  - 513
EP  - 528
VL  - 210
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1992__210_1_174416/
ID  - MZ_1992__210_1_174416
ER  -