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The sunspot areas and the relative sunspot numbers
Geofisica pura e applicata, 1960Within each sunspot cycle the yearly means (A) of the daily sunspot areas increase faster than the corresponding sunspot numbers (R) from the minimum to the maximum of solar activity and then decrease also faster than these numbers till the next minimum.
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Sunspots Rotation Rate and Sunspot Cycle
2005International ...
Mouradian, Zadig, Heristchi, Djamshid
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The Shape of Sunspots and Solar Activity Cycles
Solar Physics, 2022Andrey Tlatov, Tlatov Andrey G
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Non-standard magnetohydrodynamics equations and their implications in sunspots
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020Rami Ahmad El-Nabulsi
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Book Review: The Controversy on Sunspots: On Sunspots
Journal for the History of Astronomy, 2012openaire +1 more source
Sunspots, GDP and the stock market
Technological Forecasting and Social Change, 2007Theodore Modis
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