@article{1183485341, author = {MacDuffee, C. C.}, title = {On transformable systems and covariants of algebraic forms}, journal = {Bull. Amer. Math. Soc.}, volume = {29}, number = {10}, year = {1923}, pages = { 26-33}, language = {en}, url = {http://dml.mathdoc.fr/item/1183485341} }
MacDuffee, C. C. On transformable systems and covariants of algebraic forms. Bull. Amer. Math. Soc., Tome 29 (1923) no. 10, pp. 26-33. http://gdmltest.u-ga.fr/item/1183485341/