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Secularly smoothed data on the minima and maxima of sunspot frequency

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References

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  1. Astronomical Institute, University of Frankfurt/Main, Germany (Fed. Rep).

    W. Gleissberg

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  1. W. Gleissberg
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Gleissberg, W. Secularly smoothed data on the minima and maxima of sunspot frequency. Sol Phys 2, 231–233 (1967). https://doi.org/10.1007/BF00155925

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