@article{05312563, title = {A fixed point approach to the stability of a functional equation of the spiral of Theodorus.}, journal = {Fixed Point Theory and Applications [electronic only]}, volume = {2008}, year = {2008}, doi = {10.1155/2008/945010}, zbl = {1149.39023}, language = {en}, url = {http://dml.mathdoc.fr/item/05312563} }
Jung, Soon-Mo; Rassias, John Michael. A fixed point approach to the stability of a functional equation of the spiral of Theodorus.. Fixed Point Theory and Applications [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/945010. http://gdmltest.u-ga.fr/item/05312563/