@article{GDZPPN002242087, title = {On a theorem in Covariants}, journal = {Mathematische Annalen}, volume = {5}, year = {1872}, pages = {625-629}, zbl = {04.0062.02}, url = {http://dml.mathdoc.fr/item/GDZPPN002242087} }
Cayley. On a theorem in Covariants. Mathematische Annalen, Tome 5 (1872) pp. 625-629. http://gdmltest.u-ga.fr/item/GDZPPN002242087/