@article{GDZPPN002023970,
title = {On the Equivalence of a Functional Equation in n Variables with n Functional Equations in a Single Variable.},
journal = {Aequationes mathematicae},
volume = {5},
year = {1970},
pages = {191-197},
zbl = {0196.16602},
url = {http://dml.mathdoc.fr/item/GDZPPN002023970}
}
Howroyd, T.D. On the Equivalence of a Functional Equation in n Variables with n Functional Equations in a Single Variable.. Aequationes mathematicae, Tome 5 (1970) pp. 191-197. http://gdmltest.u-ga.fr/item/GDZPPN002023970/