@article{JRAM_1932__167_149814,
     author = {E. Hecke},
     title = {Die {Riemannschen} {Periodenrelationen} f\"ur die elliptischen {Modulfunktionen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {337--345},
     publisher = {mathdoc},
     volume = {167},
     year = {1932},
     zbl = {0003.21502},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1932__167_149814/}
}