@article{10_4064_ap_11_2_161_175,
     author = {M. Kuczma},
     title = {On the functional equation $\ensuremath{\varphi}^n(x)=g(x)$},
     journal = {Annales Polonici Mathematici},
     pages = {161--175},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1961},
     doi = {10.4064/ap-11-2-161-175},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-11-2-161-175/}
}