@article{ARM_2008_44_5_a8,
     author = {Markl, Martin},
     title = {$GL_n${-Invariant} tensors and graphs},
     journal = {Archivum mathematicum},
     pages = {449--463},
     year = {2008},
     volume = {44},
     number = {5},
     mrnumber = {2501578},
     zbl = {1212.15051},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2008_44_5_a8/}
}