@article{AM2_1975__12_136502, author = {C.F.K. Jung and V. Boonyasombat}, title = {On the functional equation f(x + f(y)) = (x) f(y). {(Short} {Communication).}}, journal = {Aequationes mathematicae}, pages = {119--120}, publisher = {mathdoc}, volume = {12}, year = {1975}, zbl = {0322.39021}, url = {http://geodesic.mathdoc.fr/item/AM2_1975__12_136502/} }