Very low frequency (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Very low frequency" in English language version.

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5books.google.com

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abelian.org

"Some recent milestones with amateur radio experiments at VLF". Retrieved 13 May 2017.

archive.org

Watt, Arthur D. (1967). VLF Radio Engineering. Pergamon Press.

books.google.com

US Federal Standard 1037B: Telecommunications, Glossary of Telecommunications Terms. Office of Technology Standards, General Services Administration. 3 June 1991. pp. S-18.
Hunsucker, R.D.; Hargreaves, John Keith (2002). The high-latitude ionosphere and its effects on radio propagation. Cambridge University Press. p. 419. ISBN 978-0-521-33083-1.
Ghosh, S.N. (2002). Electromagnetic theory and wave propagation. CRC Press. p. 89. ISBN 978-0-8493-2430-7.
Seybold, John S. (2005). Introduction to RF Propagation. John Wiley and Sons. pp. 55–58. ISBN 978-0471743682.
Holtet, J.A., ed. (17–27 April 1974). ELF-VLF Radio Wave Propagation. NATO Advanced Study Institute. Spåtind, Norway: Springer Science and Business Media. pp. 372–373. ISBN 9789401022651.

cept.org

"Sub 9 kHz spectrum in the Amateur Service". Retrieved 13 May 2017.

clui.org

ludb.clui.org

"20–25kHz". vlf.it.^{[full citation needed]}
"WA3248". ludb.clui.org. Archived from the original on 2011-09-27. Retrieved 2009-07-13.^{[full citation needed]}

doi.org

Mardina Abdullah; et al. (2013) [2012]. Development of UKM-SID teaching module for space science education. 6th International Forum on Engineering Education (IFEE 2012). Procedia - Social and Behavioral Sciences. Vol. 102. pp. 80–85. doi:10.1016/j.sbspro.2013.10.716.
Fidani, Cristiano (8 December 2011). "The Central Italy Electromagnetic Network and the 2009 L'Aquila earthquake: Observed electric activity". Geosciences. 1 (1) (published 2012): 3–25. Bibcode:2011Geosc...1....3F. doi:10.3390/geosciences1010003. ISSN 2076-3263. Retrieved 14 January 2021.

elte.hu

plasmon.elte.hu

"AWDANet". plasmon.elte.hu.

geonics.com

"Geonics Limited - VLF Receivers". Retrieved 13 June 2014.

globalsecurity.org

"Cutler". GlobalSecurity. Military Facilities.

harvard.edu

ui.adsabs.harvard.edu

Fidani, Cristiano (8 December 2011). "The Central Italy Electromagnetic Network and the 2009 L'Aquila earthquake: Observed electric activity". Geosciences. 1 (1) (published 2012): 3–25. Bibcode:2011Geosc...1....3F. doi:10.3390/geosciences1010003. ISSN 2076-3263. Retrieved 14 January 2021.

itu.int

Final Acts WRC-15 (PDF). World Radiocommunication Conference. Geneva, Switzerland: International Telecommunications Union. 2015. p. 4. Retrieved 2025-01-12.

mdpi.com

Fidani, Cristiano (8 December 2011). "The Central Italy Electromagnetic Network and the 2009 L'Aquila earthquake: Observed electric activity". Geosciences. 1 (1) (published 2012): 3–25. Bibcode:2011Geosc...1....3F. doi:10.3390/geosciences1010003. ISSN 2076-3263. Retrieved 14 January 2021.

nasa.gov

Susannah Darling (17 May 2017). "NASA's Van Allen Probes Spot Man-Made Barrier Shrouding Earth". NASA. Retrieved 11 June 2024.

navy-radio.com

Naval Shore Electronics Criteria - VLF, LF, and MF communications systems (PDF). Naval Electronics Systems Command. Washington, DC: U.S. Navy. August 1972. Manual NAVELEX 0101-113.

random-abstract.com

"Shortwave HF VHF UHF utilities monitoring". Random Abstract.

seklad69associates.com

Johnson, Richard C., ed. (1993). Antenna Engineering Handbook (PDF) (3rd ed.). McGraw-Hill. ISBN 007032381X.

smh.com.au

"Naval base link to jet plunge". The Sydney Morning Herald. Sydney, AU. 14 November 2008. Retrieved 14 November 2008.

vlf.it

"20–25kHz". vlf.it.^{[full citation needed]}
"WA3248". ludb.clui.org. Archived from the original on 2011-09-27. Retrieved 2009-07-13.^{[full citation needed]}

web.archive.org

"20–25kHz". vlf.it.^{[full citation needed]}
"WA3248". ludb.clui.org. Archived from the original on 2011-09-27. Retrieved 2009-07-13.^{[full citation needed]}

worldcat.org

search.worldcat.org

Fidani, Cristiano (8 December 2011). "The Central Italy Electromagnetic Network and the 2009 L'Aquila earthquake: Observed electric activity". Geosciences. 1 (1) (published 2012): 3–25. Bibcode:2011Geosc...1....3F. doi:10.3390/geosciences1010003. ISSN 2076-3263. Retrieved 14 January 2021.