TY  - JOUR
AU  - de Jong, A.
AU  - Oort, F.
TI  - Purity of the stratification by Newton polygons
JO  - Journal of the American Mathematical Society
PY  - 2000
SP  - 209
EP  - 241
VL  - 13
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-99-00322-7/
DO  - 10.1090/S0894-0347-99-00322-7
ID  - 10_1090_S0894_0347_99_00322_7
ER  -