@article{MM2_1990__66_1_155483,
     author = {Aloys Krieg},
     title = {Koecher-Maa{\ss}-Series for {Modular} {Forms} of {Quaternions.}},
     journal = {Manuscripta mathematica},
     pages = {431--451},
     publisher = {mathdoc},
     volume = {66},
     number = {1},
     year = {1990},
     zbl = {0698.10019},
     url = {http://geodesic.mathdoc.fr/item/MM2_1990__66_1_155483/}
}