@article{GDZPPN002028611, title = {On the functional equation f(x + f(y)) = (x) f(y). (Short Communication).}, journal = {Aequationes mathematicae}, volume = {13}, year = {1975}, pages = {119-120}, zbl = {0322.39021}, url = {http://dml.mathdoc.fr/item/GDZPPN002028611} }
Jung, C.F.K.; Boonyasombat, V. On the functional equation f(x + f(y)) = (x) f(y). (Short Communication).. Aequationes mathematicae, Tome 13 (1975) pp. 119-120. http://gdmltest.u-ga.fr/item/GDZPPN002028611/