@article{05382093,
title = {On the Ulam problem for Euler quadratic mappings.},
journal = {Novi Sad Journal of Mathematics},
volume = {35},
year = {2005},
pages = {57-66},
zbl = {1164.39334},
language = {en},
url = {http://dml.mathdoc.fr/item/05382093}
}
Rassias, John Michael. On the Ulam problem for Euler quadratic mappings.. Novi Sad Journal of Mathematics, Tome 35 (2005) pp. 57-66. http://gdmltest.u-ga.fr/item/05382093/