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LONG-PATH VLF - FREQUENCY VARIATIONS ASSOCIATED WITH THE SOLAR FLARE OF 23 FEBRUARY 1956
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[2]
ALPERT IA, 1959, RADIOTEKH ELEKTRON, V4, P202
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VERY-LOW-FREQUENCY EFFECTS FROM NOVEMBER 10, 1961, POLAR-CAP ABSORPTION EVENT
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[5]
BATES HF, 1964, 154 U AL REPT
[6]
Budden K. G., 1961, WAVEGUIDE MODE THEOR
[7]
BUDDEN KG, 1953, PHILOS MAG, V44, P504
[8]
VLF PROPAGATION MEASUREMENTS FOR THE RADUX-OMEGA NAVIGATION SYSTEM
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[9]
TRANSEQUATORIAL RECEPTION OF VERY-LOW-FREQUENCY TRANSMISSION
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[10]
CHILTON CJ, 1964, 210 NBS TECH NOT