@article{JRAM_1893__112_148905,
     author = {Leo K\"onigsberger},
     title = {Ueber die {Convergenzbereiche} der {Integrale} partieller {Differentialgleichungen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {181--204},
     publisher = {mathdoc},
     volume = {112},
     year = {1893},
     zbl = {25.0599.01},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1893__112_148905/}
}