@article{10_4064_ap_31_2_141_144,
     author = {S. Czerwik},
     title = {Special solutions of a functional equation},
     journal = {Annales Polonici Mathematici},
     pages = {141--144},
     publisher = {mathdoc},
     volume = {31},
     number = {2},
     year = {1975},
     doi = {10.4064/ap-31-2-141-144},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-31-2-141-144/}
}