@article{MOMA_1960__64_177105,
     author = {Svetozar Kurepa},
     title = {Functional {Equation} {F(x+y)} {F(x-y)} = {F2(x)} {-F2(y)} in n-dimensional {Vector} {Space.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {321--329},
     publisher = {mathdoc},
     volume = {64},
     year = {1960},
     zbl = {0097.32003},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1960__64_177105/}
}