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most citedBipolar Magnetic Regions on the Sun: Global Analysis of the SOHO/MDI Data Set

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physics.hist-ph2015★ 9 cited

Transition of the Sunspot Number from Zurich to Brussels in 1980: A Personal Perspective

J. O. Stenflo

The Swiss Federal Observatory, which had been founded in 1863 by Rudolf Wolf, was dissolved in connection with the retirement of Max Waldmeier in 1979. The determination of the Zur…