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20 Antipode Effect, 1952 .
. (W.Schumann. Propagation of Electromagnetic waves in the Earth-Ionosphere Wave Guide. Zeitschrift fur Naturforschung 7a, 149, 1952).
:
- Yakov Alpert. Making waves: stories from my life. Yale University Press. New Haven & London. 2000.
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*65*, 1958, *120*, 1958.
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