@article{AM2_1982__24_136934,
     author = {S\'andor Veres},
     title = {On a functional equation in connection with information theory.},
     journal = {Aequationes mathematicae},
     pages = {179--186},
     publisher = {mathdoc},
     volume = {24},
     year = {1982},
     zbl = {0513.39005},
     url = {http://geodesic.mathdoc.fr/item/AM2_1982__24_136934/}
}