@article{MAN_1989__283_1_164534,
     author = {Carl Friedrich Hermann},
     title = {Thetareihen und modulare {Spitzenformen} zu den {Hilbertschen} {Modulgruppen} reell-quadratischer {K\"orper.} {II.}},
     journal = {Mathematische Annalen},
     pages = {689--700},
     publisher = {mathdoc},
     volume = {283},
     number = {1},
     year = {1989},
     zbl = {0674.14032},
     url = {http://geodesic.mathdoc.fr/item/MAN_1989__283_1_164534/}
}