@article{02165220, title = {The ring of invariants of three }, journal = {Sibirskij Matematicheskij Zhurnal}, volume = {45}, year = {2004}, pages = {624-633}, zbl = {1065.16020}, language = {en}, url = {http://dml.mathdoc.fr/item/02165220} }
Lopatin, A.A. The ring of invariants of three . Sibirskij Matematicheskij Zhurnal, Tome 45 (2004) pp. 624-633. http://gdmltest.u-ga.fr/item/02165220/