@article{JRAM_1969__234_150908,
     author = {Erwin Kreyszig},
     title = {Eine {Bemerkung} zu den {Iterationsverfahren} von v. {Krzywoblocki} und {Picard.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {184--186},
     publisher = {mathdoc},
     volume = {234},
     year = {1969},
     zbl = {0167.07203},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1969__234_150908/}
}