@article{MZ_1942__48_169003,
     author = {M., Eichler},
     title = {Konstruktion l\"osender {Kerne} f\"ur singul\"are {Integralgleichungen} erster {Art,} insbesondere bei {Differenzkern}},
     journal = {Mathematische Zeitschrift},
     pages = {503--526},
     publisher = {mathdoc},
     volume = {48},
     year = {1942},
     zbl = {68.0230.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1942__48_169003/}
}