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Evidence for an ultra-long cycle of solar activity

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  1. Institute for Applied Physics, University of Frankfurt/Main, Germany, (Fed. Rep.)

    R. Henkel

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  1. R. Henkel
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In cooperation with the Astronomical Institute, University of Frankfurt/Main.

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Henkel, R. Evidence for an ultra-long cycle of solar activity. Sol Phys 25, 498–499 (1972). https://doi.org/10.1007/BF00192347

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  • DOI: https://doi.org/10.1007/BF00192347

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