@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/