@article{AM2_1971__6_136173,
     author = {DONALD B. SMALL},
     title = {On the {Functional} {Equation} {F(u)} = {F(l} - u) + {F(u/l} - u), u ... [0, ...] {(Short} {Communication)}},
     journal = {Aequationes mathematicae},
     pages = {115--116},
     publisher = {mathdoc},
     volume = {6},
     year = {1971},
     url = {http://geodesic.mathdoc.fr/item/AM2_1971__6_136173/}
}