1. Book

Sophocles J. Orfanidis , Pearson Education, Inc. Copyright (c) 1996--2009 by Prentice Hall, Inc. Previous ISBN 0-13-209172-0.

                Website : https://www.ece.rutgers.edu/~orfanidi/intro2sp/orfanidis-i2sp.pdf

John G. Proakis, Dimitris G. Manolakis (2007.), Digital Signal Processing, Pearson

               Website : https://books-library.net/files/books-library.net-02182115Nk1L2.pdf