论文信息 - The indices of solar activity - 字舞流文

The indices of solar activity

C. W. Allen | G. Godoli

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[3] P. Wayman. Daily Maps of the Sun , 1956, Nature.

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[5] C. W. Allen. Critical frequencies, sunspots, and the Sun's ultra-violet radiation , 1948 .

[6] G. Hale,et al. Magnetic observations of sunspots, 1917-1924 ... , 1938 .