@article{GDZPPN002112779,
title = {Hall algebras, hereditary algebras and quantum groups.},
journal = {Inventiones mathematicae},
volume = {121},
year = {1995},
pages = {361-378},
zbl = {0836.16021},
url = {http://dml.mathdoc.fr/item/GDZPPN002112779}
}
Green, James A. Hall algebras, hereditary algebras and quantum groups.. Inventiones mathematicae, Tome 121 (1995) pp. 361-378. http://gdmltest.u-ga.fr/item/GDZPPN002112779/