@article{GDZPPN002037815,
title = {On a linear functional equation.},
journal = {Aequationes mathematicae},
volume = {38},
year = {1989},
pages = {113-122},
zbl = {0686.39012},
url = {http://dml.mathdoc.fr/item/GDZPPN002037815}
}
Székelyhidi, László. On a linear functional equation.. Aequationes mathematicae, Tome 38 (1989) pp. 113-122. http://gdmltest.u-ga.fr/item/GDZPPN002037815/