@article{MZ_1953__58_169335,
     author = {Karl Nickel},
     title = {L\"osung von zwei verwandten {Integralgleichungssystemen.}},
     journal = {Mathematische Zeitschrift},
     pages = {49--62},
     publisher = {mathdoc},
     volume = {58},
     year = {1953},
     zbl = {0050.10301},
     url = {http://geodesic.mathdoc.fr/item/MZ_1953__58_169335/}
}