@article{GDZPPN002025345,
title = {On the System of Functional Equations f(x +y) = f(x) + f (y) and f(xy)=p(x)f(y)},
journal = {Aequationes mathematicae},
volume = {7},
year = {1971},
pages = {195-201},
zbl = {0224.39009},
url = {http://dml.mathdoc.fr/item/GDZPPN002025345}
}
KANNAPPAN, PL.; HORINOUCHI, SOICHI. On the System of Functional Equations f(x +y) = f(x) + f (y) and f(xy)=p(x)f(y). Aequationes mathematicae, Tome 7 (1971) pp. 195-201. http://gdmltest.u-ga.fr/item/GDZPPN002025345/