1. Rabiner LR, Gold B (1975) Theory and application of digital signal processing. Prentice-Hall, Englewood Cliffs
2. Singleton RA Jr, Straits BC, Straits MM (1993) Approaches to social research. Oxford University Press, Oxford
3. Mendel JM (1995) Lessons in estimation theory for signal processing, communications, and control. Pearson Education, Upper Saddle River
4. Hagan MT, Demuth HB, Beale MH (1996) Neural network design. Pws Pub, Boston
5. Ifeachor EC, Jervis BW (2002) Digital signal processing: a practical approach. Pearson Education, Harlow