@article{PIM_1963_N_S_03_17_a6,
     author = {L\'aszl\'o Losonczi},
     title = {\"Uber {Eine} {Multilineare} {Funktionalgleichung} {Mit} {Mehreren} {Unbekannten} {Funktionen}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {47 },
     publisher = {mathdoc},
     volume = {_N_S_03},
     number = {17},
     year = {1963},
     url = {http://geodesic.mathdoc.fr/item/PIM_1963_N_S_03_17_a6/}
}