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↑ Colin Robinson (2003). Competition and regulation in utility markets. Edward Elgar Publishing. tr. 175. ISBN 9781843762300.
↑ ITU Radio Regulations, Volume 1, Article 2; Edition of 2008. Available online at
↑ Booth, C.F. (1949). “Nomenclature of Frequencies”. The Post Office Electrical Engineers' Journal 42 (1): 47–48.
↑ Per IEEE Std 521-2002 Standard Letter Designations for Radar-Frequency Bands. Reaffirmed standard of 1984; originally dates back to World War II.
↑ www.microwaves101.com "Waveguide frequency bands and interior dimensions"

ITU-R Recommendation V.431: Nomenclature of the frequency and wavelength bands used in telecommunications. International Telecommunication Union, Geneva.
IEEE Standard 521-2002: Standard Letter Designations for Radar-Frequency Bands
AFR 55-44/AR 105-86/OPNAVINST 3430.9A/MCO 3430.1, ngày 27 tháng 10 năm 1964 superseded by AFR 55-44/AR 105-86/OPNAVINST 3430.1A/MCO 3430.1A, ngày 6 tháng 12 năm 1978: Performing Electronic Countermeasures in the United States and Canada, Attachment 1,ECM Frequency Authorizations.

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