@article{MM2_1990__66_1_155469,
     author = {Masahiro Yasumoto},
     title = {Nonstandard arithmetic of iterated polynomials.},
     journal = {Manuscripta mathematica},
     pages = {227--236},
     publisher = {mathdoc},
     volume = {66},
     number = {1},
     year = {1990},
     zbl = {0701.11044},
     url = {http://geodesic.mathdoc.fr/item/MM2_1990__66_1_155469/}
}