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Autor:
Leussu, R. (R.), Usoskin, I. G. (I. G.), Senthamizh Pavai, V. (V.), Diercke, A. (A.), Mursula, K. (K.)
The spatio-temporal evolution of sunspot activity, the so-called Maunder butterfly diagram, has been continously available since 1874 using data from the Royal Greenwich Observatory, extended by SOON network data after 1976. Here we present a new ext
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::0975ebd15cb924a745c8de7da3bc8ac8
http://urn.fi/urn:nbn:fi-fe201703204892
http://urn.fi/urn:nbn:fi-fe201703204892
