TY  - JOUR
AU  - N.I. Shepherd-Barron
TI  - Unstable vector bundles and linear systems on surfaces in characteristic p.
JO  - Inventiones mathematicae
PY  - 1991
SP  - 243
EP  - 262
VL  - 106
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1991__106_1_143941/
ID  - IM_1991__106_1_143941
ER  -