Abstract
IT is generally accepted that during the last four cycles of solar activity the intensity of the maxima has been steadily increasing.
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References
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GODOLI, G., TAGLIAFERRI, G. Maxima of the Eleven-year Cycle of Solar Phenomena. Nature 207, 1283–1284 (1965). https://doi.org/10.1038/2071283a0
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DOI: https://doi.org/10.1038/2071283a0
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