Space Pole Publications Server 1 records found  Search took 0.00 seconds. 
Science Article (Ref.) 
The umbra-penumbra area ratio of sunspots during the Maunder Minimum / Carrasco, V.M.S. ; García-Romero, J.M. ; Vaquero, J.M. ; Rodríguez, P. G. ; et al
published in Astrophysical Journal (2018) 10.3847/1538-4357/aad9f6 [SCART-2018-0059]

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