@article{JRAM_1884__97_148584,
     author = {F. Caspary},
     title = {Ueber das {Additionstheorem} der {Thetafunctionen} mehrerer {Argumente.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {165--171},
     year = {1884},
     volume = {97},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1884__97_148584/}
}