@article{GDZPPN002384116, title = {Zur Theorie der Modulformen n-ten Grades. I.}, journal = {Mathematische Zeitschrift}, volume = {59}, year = {1953}, pages = {399-416}, zbl = {0055.07704}, url = {http://dml.mathdoc.fr/item/GDZPPN002384116} }
Koecher, Max. Zur Theorie der Modulformen n-ten Grades. I.. Mathematische Zeitschrift, Tome 59 (1953) pp. 399-416. http://gdmltest.u-ga.fr/item/GDZPPN002384116/