@article{AM2_1986__30_137117,
     author = {P. Fischer},
     title = {The {Feigenbaum} functional equation and periodic points. {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {118--118},
     publisher = {mathdoc},
     volume = {30},
     year = {1986},
     zbl = {0593.39001},
     url = {http://geodesic.mathdoc.fr/item/AM2_1986__30_137117/}
}