@article{AM2_1981__22_136855,
     author = {M. Kuczma and R. Graw},
     title = {Infinite discrete sets of limit points of iterative sequences of contiunous functions.},
     journal = {Aequationes mathematicae},
     pages = {64--69},
     publisher = {mathdoc},
     volume = {22},
     year = {1981},
     zbl = {0487.26002},
     url = {http://geodesic.mathdoc.fr/item/AM2_1981__22_136855/}
}