Study of Infinite Impulse Response (IIR) filter 
References
Books
-"Digital signal Processing: Principles, Algorithms, and Applications",John G. Proakisand Dimitris G. Manolakis, 4E. Sept. 2007.
-"Digital signal Processing: Principles, Algorithms, and Applications",John G. Proakisand Dimitris G. Manolakis, 4E. Sept. 2007.