@article{01590797, title = {On the stability of the quadratic mapping in normed spaces.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {25}, year = {2001}, pages = {217-229}, doi = {10.1155/S0161171201004707}, zbl = {0986.39015}, language = {en}, url = {http://dml.mathdoc.fr/item/01590797} }
Kim, Gwang Hui. On the stability of the quadratic mapping in normed spaces.. International Journal of Mathematics and Mathematical Sciences, Tome 25 (2001) pp. 217-229. doi : 10.1155/S0161171201004707. http://gdmltest.u-ga.fr/item/01590797/