1. Bracewell, R.N.: Fourier Analysis and Imaging. Kluwer Academic/Plenum Publishers, New York (2003)
2. Chen, C.T.: Signals and Systems, 3 edn. Oxford University Press, Oxford, UK (2004)
3. Curtain, R., Zwart, H.: An Introduction to Infinite-Dimensional Systems Theory. Springer-Verlag, New York (1995)
4. Girod, B., Rabenstein, R., Stenger, A.: Signals and Systems. Wiley, Chichester (2001)
5. Haykin, S., Veen, B.V.: Signals and Systems, 2002 edn. Wiley, Chichester, UK (2002)