@article{AM2_1968__1_135987,
     author = {Z. Dar\'oczy},
     title = {\"Uber ein {Funktionalgleichungssystem} der {Informationstheorie.} {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {311--311},
     publisher = {mathdoc},
     volume = {1},
     year = {1968},
     url = {http://geodesic.mathdoc.fr/item/AM2_1968__1_135987/}
}