Iterative functional equations

A treatise on the calculus of finite differences

A treatise on the calculus of finite differences

Asymptotic behavior and stability problems in ordinary differential equations

Differential and Difference Equations with Applications

Functional equations with causal operators

Integral operators in the theory of linear partial differential equations

Linear partial differential operators

Computational techniques for the summation of series

Volterra integral and functional equations

Differential Equations: A Dynamical Systems Approach

Vorlesungen über Funktionalgleichungen und ihre Anwendungen

Functional differential equations

Elements of the theory of functions and functional analysis, by A.N. Kolmogorov and S.V. Fomin

Real Analysis

The integration of functions of a single variable

Introduction to infinitesimal analysis

Real analysis and probability

Introduction to real analysis