TY  - JOUR
AU  - Claus Michael Ringel
TI  - The category of modules with good filtrations over a quasi-hereditary algebra has almost split sequences.
JO  - Mathematische Zeitschrift
PY  - 1991
SP  - 209
EP  - 224
VL  - 208
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1991__208_3_174312/
ID  - MZ_1991__208_3_174312
ER  -