A Handbook on Electrical Filters Synthesis, Design and Applications by White Electromagnetics: Very Good Hardcover (1963) 1st Edition | Nightshade Booksellers, IOBA member
Electronic filter - Wikipedia
Filter Circuit - an overview | ScienceDirect Topics
A Handbook on Electrical Filters Synthesis, Design and Applications by White Electromagnetics: Very Good Hardcover (1963) 1st Edition | Nightshade Booksellers, IOBA member