A treatise on the calculus of finite differences

A treatise on the calculus of finite differences

George Boole

Asymptotic behavior and stability problems in ordinary differential equations

Lamberto Cesari

Differential and Difference Equations with Applications

Sandra Pinelas

Linear partial differential operators

Lars Hörmander

Integral operators in the theory of linear partial differential equations

Stefan Bergman

Iterative functional equations

Marek Kuczma

Functional equations with causal operators

C. Corduneanu

Computational techniques for the summation of series

Anthony Sofo

Functional differential equations

A. B. Antonevich