TY  - JOUR
AU  - D.W. Lewis
TI  - Witt rings as integral rings.
JO  - Inventiones mathematicae
PY  - 1987
SP  - 631
EP  - 634
VL  - 90
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1987__90_143524/
ID  - IM_1987__90_143524
ER  -