@article{05827498,
title = {J. M. Rassias product-sum stability of an Euler-Lagrange functional equation.},
journal = {The Journal of Nonlinear Sciences and its Applications},
volume = {3},
year = {2010},
pages = {265-271},
zbl = {1204.39031},
language = {en},
url = {http://dml.mathdoc.fr/item/05827498}
}
Rassias, Matina J. J. M. Rassias product-sum stability of an Euler-Lagrange functional equation.. The Journal of Nonlinear Sciences and its Applications, Tome 3 (2010) pp. 265-271. http://gdmltest.u-ga.fr/item/05827498/