%0 Journal Article %A Markl, Martin %T $GL_n$-Invariant tensors and graphs %J Archivum mathematicum %D 2008 %P 449-463 %V 44 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_2008__44_5_a8/ %G en %F ARM_2008__44_5_a8