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@article{AM2_1997__54_3_137695, author = {Costanza Borelli}, title = {On {Hyers-Ulam} stability for a class of functional equations.}, journal = {Aequationes mathematicae}, pages = {74--86}, publisher = {mathdoc}, volume = {54}, number = {3}, year = {1997}, zbl = {0879.39009}, url = {http://geodesic.mathdoc.fr/item/AM2_1997__54_3_137695/} }
Costanza Borelli. On Hyers-Ulam stability for a class of functional equations.. Aequationes mathematicae, Tome 54 (1997) no. 3, pp. 74-86. http://geodesic.mathdoc.fr/item/AM2_1997__54_3_137695/