@article{01509539, title = {The stability of the equation }, journal = {Acta Mathematica Universitatis Comenianae. New Series}, volume = {69}, year = {2000}, pages = {127-135}, zbl = {1021.39013}, language = {en}, url = {http://dml.mathdoc.fr/item/01509539} }
Faĭziev, V. The stability of the equation . Acta Mathematica Universitatis Comenianae. New Series, Tome 69 (2000) pp. 127-135. http://gdmltest.u-ga.fr/item/01509539/