Factoring biquadratic maps on modules.
Fixed points and Hyers--Ulam--Rassias stability of Cauchy--Jensen functional equations in Banach algebras.
Fixed points and random stability of a generalized Apollonius type quadratic functional equation.
Fixed points and stability for functional equations in probabilistic metric and random normed spaces.
Fixed points and stability of a generalized quadratic functional equation.
Fixed points and stability of the Cauchy functional equation in -algebras.
Fixed points and the stability of an AQCQ-functional equation in non-Archimedean normed spaces.
Fixed points and the stability of Jensen's functional equation.
Fixed points, inner product spaces, and functional equations.
Fixed-point theorems for multi-valued functions and their applications to functional equations [Book]
Formes quadratiques sur un semi-groupe involutif.
Four variations on a theme of S. B. Presic concerning semigroup functional equations.
Fréchet's equation and Hyers theorem on noncommutative semigroups
Functional equation and its Hyers-Ulam stability.
Functional equations and *-representations on topological semigroups.
Functional equations of generalized associativity, bisymmetry, transitivity and distributivity.
Functional equations on abelian groups with involution.
Functional equations on A-orthogonal vectors.
Functional equations on restricted domains.
Functional equations on Sturm-Liouville hypergroups.