@article{05574392, title = {On the generalized Hyers-Ulam-Rassias stability of quadratic functional equations.}, journal = {Abstract and Applied Analysis}, volume = {2009}, year = {2009}, doi = {10.1155/2009/923476}, zbl = {1167.39014}, language = {en}, url = {http://dml.mathdoc.fr/item/05574392} }
Gordji, M.Eshaghi; Khodaei, H. On the generalized Hyers-Ulam-Rassias stability of quadratic functional equations.. Abstract and Applied Analysis, Tome 2009 (2009) . doi : 10.1155/2009/923476. http://gdmltest.u-ga.fr/item/05574392/