@article{AM2_1975__12_136478,
     author = {Wolf Hofmann},
     title = {Monotonieeigenschaften des {Steffensen-Verfahrens.}},
     journal = {Aequationes mathematicae},
     pages = {21--31},
     publisher = {mathdoc},
     volume = {12},
     year = {1975},
     zbl = {0298.65036},
     url = {http://geodesic.mathdoc.fr/item/AM2_1975__12_136478/}
}