@article{JRAM_1932__166_183470,
     author = {Heinrich Jung},
     title = {Ein {Beitrag} zur {L\"osung} der {Differentialgleichung} ...u + k2u = 0 mittels {Greenscher} {Funktionen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {185--192},
     publisher = {mathdoc},
     volume = {166},
     year = {1932},
     zbl = {58.0497.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1932__166_183470/}
}