On a generalization of sum form functional equation - V.
On a generalization of the sum form functional equation. VI
On a generalized directed-divergence function
On a local form of Jensen's functional equation.
On a local form of Lobachevski's functional equation
On a multiplace functional equation related to information measures and functions
On a pair of functional equations of combinatorial interest.
On a problem of Aczél and Erdös concerning Hamel bases.
On a sum form functional equation.
On a Triangular Functional Equation and Some Applications, in Particular to the Generalized Theory of Information.
On additive and non-additive measures of directed divergence
On algebraic functions satisfying a class of functional equations.
On algebraic functions satisfying a class of functional equations. (Short Communication).
On alternative functional equations. (Short Communication).
On alternatives equivalent to the Cauchy functional equation and a related equation.
On alternatives equivalent to the Cauchy functional equation and a related equation. (Short Communication).
On an alternative Cauchy equation.
On an alternative functional equation related to the Cauchy equation. (Short Communication).
On an equation of information theory.
On associative developable surfaces