@article{05312546,
title = {Generalized Hyers-Ulam stability of quadratic functional equations: a fixed point approach.},
journal = {Fixed Point Theory and Applications [electronic only]},
volume = {2008},
year = {2008},
doi = {10.1155/2008/493751},
zbl = {1146.39048},
language = {en},
url = {http://dml.mathdoc.fr/item/05312546}
}
Park, Choonkil. Generalized Hyers-Ulam stability of quadratic functional equations: a fixed point approach.. Fixed Point Theory and Applications [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/493751. http://gdmltest.u-ga.fr/item/05312546/