1. R. Badora, On approximate derivations, Math. Inequal. Appl., 9 (2006), 167–173.
2. J. A. Baker, The stability of the cosine equation, Proc. Amer. Math. Soc., 80 (1980), 411–416.
3. M. Bavand Savadkouhi, M. E. Gordji, J. M. Rassias and N. Ghobadipour, Approximate ternary Jordan derivations on Banach ternary algebras, J. Math. Phys., 50, 042303 (2009), 9 pages
4. D. G. Bourgin, Classes of transformations and bordering transformations, Bull. AMS, 57 (1951), 223–237.
5. L. Cădariu and V. Radu, On the stability of the Cauchy functional equation: A fixed point approach, Grazer Math. Ber., 346 (2004), 43–52.