@article{10_4064_ap_11_2_115_122,
     author = {J. Kordylewski},
     title = {Continuous solutions of the functional equation {\ensuremath{\varphi}[f(x)]=F(x,\ensuremath{\varphi}(x))} with the function },
     journal = {Annales Polonici Mathematici},
     pages = {115--122},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1961},
     doi = {10.4064/ap-11-2-115-122},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-11-2-115-122/}
}