@article{JRAM_1830__5_183192,
     author = {C. Gudermann},
     title = {Combinatorisch-analytische {Abhandlung,} enthaltend den {Beweis} der vier {Summationsformeln} {Band} 3. {Heft} 2. {S.} 207. d. {Journals.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {402--413},
     publisher = {mathdoc},
     volume = {5},
     year = {1830},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1830__5_183192/}
}