@article{AM2_1981__22_136886,
     author = {John A. Baker and Michael Albert},
     title = {Functions with bounded nth differences. {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {320--320},
     publisher = {mathdoc},
     volume = {22},
     year = {1981},
     url = {http://geodesic.mathdoc.fr/item/AM2_1981__22_136886/}
}