@article{MAN_1979__244_163293,
     author = {Michael Ackerman},
     title = {On the {Generating} {Functions} of {Certain} {Eisenstein} {Series.}},
     journal = {Mathematische Annalen},
     pages = {75--82},
     publisher = {mathdoc},
     volume = {244},
     year = {1979},
     zbl = {0396.10015},
     url = {http://geodesic.mathdoc.fr/item/MAN_1979__244_163293/}
}