@article{10_4064_ap_30_1_57_61,
     author = {A. Smajdor},
     title = {Note on a functional equation},
     journal = {Annales Polonici Mathematici},
     pages = {57--61},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1974},
     doi = {10.4064/ap-30-1-57-61},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-30-1-57-61/}
}