[1] Agarwal Ravi P, Xu Bing, Zhang W. Stability of functional equations in single variable. J Math Anal Appl, 2003, 288: 852–869

[2] Badora R. On approximate ring homomorphisms. J Math Anal Appl, 2002, 276: 589–597

[3] Badora R. On approximate derivations. Math Inequal Appl, 2006, 9: 167–173

[4] Baker J, Lawrence J, Zorzitto F. The stability of the equation f(x+y) = f(x)f(y). Proc Amer Math Soc, 1979, 74: 242–246

[5] Bourgin D G. Approximately isometric and multiplicative transformations on continuous function rings. Duke Math J, 1949, 16: 385–397

[6] Bresar M. Jordan mappings of semiprime rings. J Algebra, 1989, 127: 218–228

[7] Bresar M. Jordan derivations on semiprime rings. Proc Amer Math Soc, 1988, 104: 1003–1006

[8] Bresar M. Vukman J. Jordan derivations on prime rings. Bull Austral Math Soc, 1988, 37: 321–322

[9] Cusack J M. Jordan derivations on rings. Proc Amer Math Soc, 1975, 53: 321–324

[10] C?adariu L, Radu V. On the stability of the Cauchy functional equation: a fixed point approach. Grazer Mathematische Berichte, 2004, 346: 43–52

[11] C?adariu L, Radu V. The fixed points method for the stability of some functional equations. Carpathian Journal of Mathematics, 2007, 23: 63–72

[12] C?adariu L, Radu V. Fixed points and the stability of quadratic functional equations. Analele Universitatii de Vest din Timisoara, 2003, 41: 25–48

[13] C?adariu L, Radu V. Fixed points and the stability of Jensen’s functional equation. J Inequal Pure Appl Math, 2003, 4: Article ID 4

[14] Czerwik S. Functional Equations and Inequalities in Several Variables. River Edge, NJ: World Scientific, 2002

[15] Forti G L. Hyers–Ulam stability of functional equations in several variables. Aequationes Math, 1995, 50: 143–190

[16] Gajda Z. On stability of additive mappings. Internat J Math Math Sci, 1991, 14: 431–434

[17] G?avruta P. A generalization of the Hyers–Ulam–Rassias stability of approximately additive mappings. J Math Anal Appl, 1994, 184: 431–436

[18] Haagerup U, Laustsen N. Weak amenability of C-algebras and a theorem of Goldstein//Banach Algebras’97 (Blaubeuren). Berlin: de Gruyter, 1998: 223–243

[19] Herstein I N. Jordan derivations of prime rings. Proc Amer Math Soc, 1957, 8: 1104–1110

[20] Hyers D H. On the stability of the linear functional equation. Proc Nat Acad Sci U S A, 1941, 27: 222–224

[21] Hyers D H, Rassias Th M. Approximate homomorphisms. Aequationes Math, 1992, 44: 125–153

[22] Hyers D H, Isac G, Rassias ThM. Stability of Functional Equations in Several Variables. Basel: Birkh¨auser, 1998

[23] Johnson B E. Symmetric amenability and the nonexistence of Lie and Jordan derivations. Math Proc Camb Phil Soc, 1996, 120: 455–473

[24] Jun K W, Kim H M. Approximate derivations mapping into the radicals of Banach algebras. Taiwanese J Math, 2007, 11: 277–288

[25] Jun K W, Park D W. Almost derivations on the Banach algebra Cn [0, 1]. Bull Korean Math Soc, 1996, 33: 359–366

[26] Jung S M. Hyers–Ulam–Rassias Stability of Functional Equations in Mathematical Analysis. Palm Harbor: Hadronic Press, 2001

[27] Miura T, Takahasi S E, Hirasawa G. Hyers–Ulam–Rassias stability of Jordan homomorphisms on Banach algebras. J Inequal Appl, 2005, 4: 435–441

[28] Park C. Linear derivations on Banach algebras. Nonlinear Funct Anal Appl, 2004, 9: 359–368

[29] Park C. Hyers–Ulam–Rassias stability of homomorphisms in quasi-Banach algebras. Bull Sci Math, 2008, 132: 87–96

[30] Park C. Homomorphisms between Poisson JC-algebras. Bull Brazilian Math Soc, 2005, 36: 79–97

[31] Park C, Eshaghi Gordji M. Comment on pproximate ternary Jordan derivations on Banach ternary algebras [Bavand Savadkouhi et al. J Math Phys 50. 042303 (2009)]. J Math Phys, 2010, 51: 044102

[32] Park C, Rassias J M. Stability of the Jensen-type functional equation in C-algebras: a fixed point approach. Abstract and Applied Analysis, 2009, Article ID 360432

[33] Radu V. The fixed point alternative and the stability of functional equations. Fixed Point Theory, 2003, 4: 91–96

[34] Rassias Th M. On the stability of the linear mapping in Banach spaces. Proc Amer Math Soc, 1978, 72: 297–300

[35] Rassias Th M. On the stability of functional equations and a problem of Ulam. Acta Appl Math, 2000, 62: 23–130

[36] Rus I A. Principles and Applications of Fixed Point Theory. Cluj-Napoca: Dacia, 1979 (in Romanian)

[37] Ulam S M. Problems in Modern Mathematics. Science ed. New York: Wiley, 1940

[38] Vukman J. An equation on operator algebras and semisimple H-algebras. Glas Mat Ser III, 2005, 40(60): 201–205

[39] Vukman J, Kosi-Ulbl I. A note on derivations in semiprime rings. Int J Math Math Sci, 2005, 20: 3347–3350

[40] Xu Bing, Zhang W. Hyers–Ulam stability for a nonlinear iterative equation. Colloq Math, 2002, 93: 1–9