%0 Journal Article %A Kopeček, Oldřich %T Equation $f(p(x)) = q(f(x))$ for given real functions $p$, $q$ %J Czechoslovak Mathematical Journal %D 2012 %P 1011-1032 %V 62 %N 4 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.1007/s10587-012-0061-2/ %R 10.1007/s10587-012-0061-2 %G en %F 10_1007_s10587_012_0061_2