I need two papers about Transmission Line Transformers

[1] E. Rotholz, "Transmission-line transformers," IEEE Transactions on Microwave Theory and Technology, Vol. MTT- 29, No.4, April 1981, pp. 327-331.

[2] Jerry Sevick, Transmission Line Transformers, 2nd Ed., American Radio Relay League, Newington, CT, 1990.

thanks !

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