Title: Functional Equations - Results and Advances / Edition 1, Author: Zoltan Daroczy
Title: Functional Differential Equations: Application of i-smooth calculus / Edition 1, Author: A.V. Kim
Title: Introduction to the Theory and Applications of Functional Differential Equations / Edition 1, Author: V. Kolmanovskii
Title: Functional Equations And Inequalities: Solutions And Stability Results, Author: John Michael Rassias