This paper discusses continuous solutions of the functional equation φ[f(x)] = g(x,φ(x)) in topological spaces.
@article{bwmeta1.element.bwnjournal-article-apmv65z2p151bwm, author = {Kazimierz Dankiewicz}, title = {On continuous solutions of a functional equation}, journal = {Annales Polonici Mathematici}, volume = {66}, year = {1997}, pages = {151-156}, zbl = {0873.39011}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv65z2p151bwm} }
Kazimierz Dankiewicz. On continuous solutions of a functional equation. Annales Polonici Mathematici, Tome 66 (1997) pp. 151-156. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv65z2p151bwm/
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