Calculated mode conversion coefficients for a graded height change in the earth-ionosphere waveguide at VLF [by] Kenneth P. Spies [and] James R. WaitKenneth P. Spies · First published 1968Open the Tome
Mode Calculations for VLF Propagation in the Earth-Ionosphere Waveguide; NBS Technical Note 114Kenneth P. Wait James R. Spies · First published 2021Open the Tome
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