@article{GDZPPN002095785,
title = {Infinite Root Systems, Representations of Graphs and Invariant Theory.},
journal = {Inventiones mathematicae},
volume = {56},
year = {1980},
pages = {57-92},
zbl = {0427.17001},
url = {http://dml.mathdoc.fr/item/GDZPPN002095785}
}
Kac, V.G. Infinite Root Systems, Representations of Graphs and Invariant Theory.. Inventiones mathematicae, Tome 56 (1980) pp. 57-92. http://gdmltest.u-ga.fr/item/GDZPPN002095785/