@article{AM2_1969__2_182321,
     author = {Z. DAROCZY},
     title = {\"Uber ein {Funktionalgleichungssystem} der {Informationstheorie}},
     journal = {Aequationes mathematicae},
     pages = {144--149},
     publisher = {mathdoc},
     volume = {2},
     year = {1969},
     zbl = {0174.20102},
     url = {http://geodesic.mathdoc.fr/item/AM2_1969__2_182321/}
}