Spies, K.
(1961),
Mode calculations for VLF propagation in the earth-ionosphere waveguide:, , National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NBS.TN.114 (Accessed June 16, 2026)
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Mode calculations for VLF propagation in the earth-ionosphere waveguide:
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- NBS TN 114
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NBS TN 114
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NIST Pubs
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Created January 1, 1961, Updated May 19, 2023