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@article{MAN_1955__130_160468, author = {M. Koecher}, title = {Zur {Operatorentheorie} der {Modulformen} n-ten {Grades.}}, journal = {Mathematische Annalen}, pages = {351--385}, publisher = {mathdoc}, volume = {130}, year = {1955}, zbl = {0073.30503}, url = {http://geodesic.mathdoc.fr/item/MAN_1955__130_160468/} }
M. Koecher. Zur Operatorentheorie der Modulformen n-ten Grades.. Mathematische Annalen, Tome 130 (1955), pp. 351-385. http://geodesic.mathdoc.fr/item/MAN_1955__130_160468/