@article{GDZPPN002033895, title = {Regularity properties of functional equations.}, journal = {Aequationes mathematicae}, volume = {25}, year = {1982}, pages = {52-66}, zbl = {0517.39009}, url = {http://dml.mathdoc.fr/item/GDZPPN002033895} }
Járai, A. Regularity properties of functional equations.. Aequationes mathematicae, Tome 25 (1982) pp. 52-66. http://gdmltest.u-ga.fr/item/GDZPPN002033895/