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RT @PhysicsPaper: Transition of the Sunspot Number from Zurich to Brussels in 1980: A Personal Perspective. https://t.co/AFz1UOmSGY
RT @PhysicsPaper: Transition of the Sunspot Number from Zurich to Brussels in 1980: A Personal Perspective. https://t.co/AFz1UOmSGY
The transition of the Sunspot Number from Zurich to Brussels in 1980 - a personal perspective by J. O. Stenflo: https://t.co/tlOPyELjCu
Transition of the Sunspot Number from Zurich to Brussels in 1980: A Personal Perspective. https://t.co/AFz1UOmSGY