%0 Journal Article %A RASSIAS, MATINA J. %T J. M. RASSIAS PRODUCT-SUM STABILITY OF AN EULER-LAGRANGE FUNCTIONAL EQUATION %J Journal of nonlinear sciences and its applications %D 2010 %P 265-271 %V 3 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.22436/jnsa.003.04.05/ %R 10.22436/jnsa.003.04.05 %G en %F JNSA_2010_3_4_a4