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ON FREQUENCY VARIATIONS OF EARTH-IONOSPHERE CAVITY MODES
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DIURNAL POWER VARIATIONS OF EARTH-IONOSPHERE CAVITY MODES AND THEIR RELATIONSHIP TO WORLDWIDE THUNDERSTORM ACTIVITY
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JOURNAL OF GEOPHYSICAL RESEARCH,
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BALSER, M
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A FURTHER NOTE ON TERRESTRIAL EXTREMELY LOW-FREQUENCY PROPAGATION IN PRESENCE OF AN ISOTROPIC IONOSPHERE WITH AN EXPONENTIAL CONDUCTIVITY-HEIGHT PROFILE
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GALEJS, J
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