@article{MZ_1940__46_168921,
     author = {F., Rellich},
     title = {Darstellung der {Eigenwerte} von ...........= 0 durch ein {Randintegral}},
     journal = {Mathematische Zeitschrift},
     pages = {635--636},
     publisher = {mathdoc},
     volume = {46},
     year = {1940},
     zbl = {0023.04204},
     url = {http://geodesic.mathdoc.fr/item/MZ_1940__46_168921/}
}