@article{GDZPPN002374706, title = {Zur Theorie der linearen Transformationen.}, journal = {Mathematische Zeitschrift}, volume = {37}, year = {1933}, pages = {572-577}, zbl = {59.0233.03}, url = {http://dml.mathdoc.fr/item/GDZPPN002374706} }
Raff, H. Zur Theorie der linearen Transformationen.. Mathematische Zeitschrift, Tome 37 (1933) pp. 572-577. http://gdmltest.u-ga.fr/item/GDZPPN002374706/