@article{GDZPPN00204241X,
title = {On Hyers-Ulam stability for a class of functional equations.},
journal = {Aequationes mathematicae},
volume = {53},
year = {1997},
pages = {74-86},
zbl = {0879.39009},
url = {http://dml.mathdoc.fr/item/GDZPPN00204241X}
}
Borelli, Costanza. On Hyers-Ulam stability for a class of functional equations.. Aequationes mathematicae, Tome 53 (1997) pp. 74-86. http://gdmltest.u-ga.fr/item/GDZPPN00204241X/