@article{GDZPPN002284324,
title = {The Iteration of Entire Transcendental Functions and the Solution of the Functional Equation f{f(z)} =F(z).},
journal = {Mathematische Annalen},
volume = {129},
year = {1955},
pages = {174-180},
zbl = {0064.07102},
url = {http://dml.mathdoc.fr/item/GDZPPN002284324}
}
Baker, I.N. The Iteration of Entire Transcendental Functions and the Solution of the Functional Equation f{f(z)} =F(z).. Mathematische Annalen, Tome 129 (1955) pp. 174-180. http://gdmltest.u-ga.fr/item/GDZPPN002284324/