Generalization of sum representation functional equations. I. Kannappan, P.L., Sathyabhama, V. (1979) International Journal of Mathematics and Mathematical Sciences
Generalization of sum representation functional equations. II: Generalized directed divergence Palaniappan Kannappan, Pushpa Narayan Rathie (1979) Kybernetika
Generalized characteristic equation of branching information measures. Bruce R. Ebanks (1989) Aequationes mathematicae
Generalized distributivity for real, continuous functions. II: Local solutions in the continuous case. Anders Lundberg (1985) Aequationes mathematicae
Generalized functional equation of two variables in information theory Bhu Dev Sharma, Ram Autar (1972) ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
Generalized fundamental equation of information of multiplicative type. Pl. Kannappan, B.R. Ebanks, C.T. Ng (1987) Aequationes mathematicae