On a functional equation with asymptotically unique continuous solutions.
On a functional equation with retarded mean.
On a functional inequality of Kemperman
On a Generalization of the Cauchy Equation.
On a problem of Davison.
On a System of Functional Equations in Information Theory.
On a Triangular Functional Equation and Some Applications, in Particular to the Generalized Theory of Information.
On alternative functional equations. (Short Communication).
On an alternative functional equation.
On boundedness and discontinuity of additive functions
On certain asymptotic functional equations.
On Continuous Solutions of a Functional Equation.
On continuous solutions of the Schröder equation
On differentiable solutions of the functional equation φ(f(x)) = g(x, φ(x)) for vector-valued functions
On Extending of Solutions of a Functional Equation. (Short Communication).
On Extending of Solutions of Functional Equations in a Single Variable
On extending solutions of a functional equation.
On Functions Defined by Iterations of Each Other.
On Functions Satisfying a Generalized Mean Value Equation.
On Lipschitzian solutions of a functional equation