@article{JRAM_1898__119_149049,
     author = {W. Heymann},
     title = {Ueber die {Differentialgleichung} ... .},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {253--258},
     publisher = {mathdoc},
     volume = {119},
     year = {1898},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1898__119_149049/}
}