Houck, Harry W.; Gaw, Norman W. Jr. (December 1961). "New method of accurate frequency measurement"(PDF). Proceedings of the Radio Club of America. Vol. 37, no. 4. Archived(PDF) from the original on 18 February 2014. Retrieved 12 November 2021.
worldcat.org
search.worldcat.org
Hallas, Joel R. W1ZR (August 2016). "Antenna analyzers - the basics". QST. Newington, CT: American Radio Relay League. pp. 32–34. ISSN0033-4812.{{cite magazine}}: CS1 maint: numeric names: authors list (link)
worldradiohistory.com
Houck, Harry W.; Gaw, Norman W. Jr. (December 1961). "New method of accurate frequency measurement"(PDF). Proceedings of the Radio Club of America. Vol. 37, no. 4. Archived(PDF) from the original on 18 February 2014. Retrieved 12 November 2021.