@article{IM_1989__95_3_143650,
     author = {Uwe Weselmann},
     title = {An elementary identity in the theory of {Hecke} {L-functions.}},
     journal = {Inventiones mathematicae},
     pages = {207--214},
     publisher = {mathdoc},
     volume = {95},
     number = {3},
     year = {1989},
     zbl = {0666.12007},
     url = {http://geodesic.mathdoc.fr/item/IM_1989__95_3_143650/}
}