1. Bodaghi, A., Senthil Kumar, B.V.: Estimation of inexact reciprocal-quintic and reciprocal-sextic functional equations. Mathematica 49(82), 3–14 (2017). No. 1–2
2. Cădariu, L., Radu, V.: Fixed ponts and the stability of Jensen’s functional equation. J. Inequ. Pure Appl. Math. 4(1), 4 (2003). Article 4
3. Cădariu, L., Radu, V.: On the stability of the Cauchy functional equation: a fixed point apporach. Grazer Math. Ber. 346, 43–52 (2006)
4. Cădariu, L., Radu, V.: Fixed points and stability for functional equations in probabilistic metric and random normed spaces. Fixed Point Theory Appl. 2009, 18 (2009). Article ID 589143
5. Găvruta, P.: A generalization of the Hyers-Ulam-Rassias stability of approximately additive mapppings. J. Math. Anal. Appl. 184, 431–436 (1994)