Title: Continuous-Time Active Filter Design, Author: T. Deliyannis
Title: Microwave Amplifier and Active Circuit Design Using the Real Frequency Technique, Author: Pierre Jarry
Title: Analog Filter and Circuit Design Handbook, Author: Arthur Williams
Title: Active Filters: Theory and Design, Author: S.A. Pactitis
Title: Uninterruptible Power Supplies and Active Filters, Author: Ali Emadi
Title: Passive, Active, and Digital Filters, Author: Wai-Kai Chen