@article{MZ_1967__101_170844,
     author = {Ulrich Christian},
     title = {Siegelsche {Modulformen} und {Integralgleichungen.}},
     journal = {Mathematische Zeitschrift},
     pages = {299--305},
     publisher = {mathdoc},
     volume = {101},
     year = {1967},
     zbl = {0157.13602},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__101_170844/}
}