1. Moschytz, G.S.: Linear integrated networks: design, (van Nostrand Reinhold, New York 1975)
2. Antoniou, A.: Digital filters: analysis and design, (McGraw-Hill, New York 1979)
3. Ghausi, M.S., and Laker, K.R.: Modern filter design: active RC, and switched capacitor, (Prentice-Hall, Englewood Cliffs, NJ 1981)