TY  - JOUR
AU  - Ralph Berr
TI  - The intersection theorem for orderings of higher level in rings.
JO  - Manuscripta mathematica
PY  - 1992
SP  - 273
EP  - 278
VL  - 75
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MM2_1992__75_4_155723/
ID  - MM2_1992__75_4_155723
ER  -