Geodesic
The category of modules with good filtrations over a quasi-hereditary algebra has almost split sequences.
Mathematische Zeitschrift, Tome 208 (1991) no. 3, pp. 209-224.

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Mots-clés : almost split sequences, Artin algebras, quasi-hereditary algebras, category of modules, good filtrations, cotilting module 
@article{MZ_1991__208_3_174312,
     author = {Claus Michael Ringel},
     title = {The category of modules with good filtrations over a quasi-hereditary algebra has almost split sequences.},
     journal = {Mathematische Zeitschrift},
     pages = {209--224},
     publisher = {mathdoc},
     volume = {208},
     number = {3},
     year = {1991},
     zbl = {0725.16011},
     url = {http://geodesic.mathdoc.fr/item/MZ_1991__208_3_174312/}
}
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Claus Michael Ringel. The category of modules with good filtrations over a quasi-hereditary algebra has almost split sequences.. Mathematische Zeitschrift, Tome 208 (1991) no. 3, pp. 209-224. http://geodesic.mathdoc.fr/item/MZ_1991__208_3_174312/