巴特沃斯滤波器 (Chinese Wikipedia)

Analysis of information sources in references of the Wikipedia article "巴特沃斯滤波器" in Chinese language version.

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1web.archive.org

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1books.google.com

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books.google.com

Giovanni Bianchi and Roberto Sorrentino. Electronic filter simulation & design. McGraw-Hill Professional. 2007: 17–20. ISBN 978-0-07-149467-0.

gonascent.com

In Wireless Engineer (also called Experimental Wireless and the Wireless Engineer), vol. 7, 1930, pp. 536–541 - "On the Theory of Filter Amplifiers"-S. Butterworth （页面存档备份，存于互联网档案馆）

web.archive.org

In Wireless Engineer (also called Experimental Wireless and the Wireless Engineer), vol. 7, 1930, pp. 536–541 - "On the Theory of Filter Amplifiers"-S. Butterworth （页面存档备份，存于互联网档案馆）