1. Volterra Integral Equations: An Introduction to Theory and Applications;Brunner,2017
2. Qualitative Theory of Volterra Difference Equations;Raffoul,2018
3. Difference Equations and Inequalities;Agarwal,2000
4. An Introduction to Difference Equations;Elaydi,2005
5. On the impulse response of a discrete-time linear IIR system;Mallik;Digit. Signal Process.,2003