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@article{MZ_1994__216_4_174667, author = {Riccardo Salvati Manni}, title = {Thetanullwerte and stable modular forms for {Hecke} groups.}, journal = {Mathematische Zeitschrift}, pages = {529--540}, publisher = {mathdoc}, volume = {216}, number = {4}, year = {1994}, zbl = {0814.11029}, url = {http://geodesic.mathdoc.fr/item/MZ_1994__216_4_174667/} }
Riccardo Salvati Manni. Thetanullwerte and stable modular forms for Hecke groups.. Mathematische Zeitschrift, Tome 216 (1994) no. 4, pp. 529-540. http://geodesic.mathdoc.fr/item/MZ_1994__216_4_174667/