@article{GDZPPN002042088,
title = {D'Alembert's functional equation on restricted domains.},
journal = {Aequationes mathematicae},
volume = {52},
year = {1996},
pages = {246-253},
zbl = {0861.39018},
url = {http://dml.mathdoc.fr/item/GDZPPN002042088}
}
Fochi, Margherita. D'Alembert's functional equation on restricted domains.. Aequationes mathematicae, Tome 52 (1996) pp. 246-253. http://gdmltest.u-ga.fr/item/GDZPPN002042088/