@article{ELMA_1982__37_141280,
     author = {P. Baptist},
     title = {Konvergenz und monotone {Einschliessung} f\"ur das {Steffensen-Verfahren.}},
     journal = {Elemente der Mathematik},
     pages = {33--40},
     publisher = {mathdoc},
     volume = {37},
     year = {1982},
     zbl = {0416.65036},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1982__37_141280/}
}